<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:THH="http://tryhardholdingslimited.com/20251231"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ifrs-full="https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <link:schemaRef xlink:href="thh-20251231.xsd" xlink:type="simple"/>
    <context id="From2025-07-01to2025-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
        </entity>
        <period>
            <startDate>2025-07-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="AsOf2025-06-30">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
        </entity>
        <period>
            <instant>2025-06-30</instant>
        </period>
    </context>
    <context id="AsOf2025-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="AsOf2025-12-31_ifrs-full_OrdinarySharesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ifrs-full:ComponentsOfEquityAxis">ifrs-full:OrdinarySharesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="AsOf2025-06-30_ifrs-full_OrdinarySharesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ifrs-full:ComponentsOfEquityAxis">ifrs-full:OrdinarySharesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-06-30</instant>
        </period>
    </context>
    <context id="AsOf2025-12-31_custom_SeriesAPreferrenceSharesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ifrs-full:ClassesOfShareCapitalAxis">THH:SeriesAPreferrenceSharesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="AsOf2025-06-30_custom_SeriesAPreferrenceSharesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ifrs-full:ClassesOfShareCapitalAxis">THH:SeriesAPreferrenceSharesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-06-30</instant>
        </period>
    </context>
    <context id="From2024-07-012024-12-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002044241</identifier>
        </entity>
        <period>
            <startDate>2024-07-01</startDate>
            <endDate>2024-12-31</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="Shares">
        <measure>shares</measure>
    </unit>
    <unit id="USDPShares">
        <divide>
            <unitNumerator>
                <measure>iso4217:USD</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <unit id="JPY">
        <measure>iso4217:JPY</measure>
    </unit>
    <unit id="JPYPShares">
        <divide>
            <unitNumerator>
                <measure>iso4217:JPY</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <dei:DocumentType contextRef="From2025-07-01to2025-12-31" id="Fact000019">6-K</dei:DocumentType>
    <dei:EntityFileNumber contextRef="From2025-07-01to2025-12-31" id="Fact000020">001-42820</dei:EntityFileNumber>
    <dei:EntityRegistrantName contextRef="From2025-07-01to2025-12-31" id="Fact000021">TryHard                                             Holdings Limited</dei:EntityRegistrantName>
    <dei:EntityAddressPostalZipCode contextRef="From2025-07-01to2025-12-31" id="Fact000022">541-0056</dei:EntityAddressPostalZipCode>
    <dei:EntityAddressAddressLine1 contextRef="From2025-07-01to2025-12-31" id="Fact000023">2 Chome 5&#x2212;19</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="From2025-07-01to2025-12-31" id="Fact000024">Kyutaromachi</dei:EntityAddressAddressLine2>
    <dei:EntityAddressAddressLine3 contextRef="From2025-07-01to2025-12-31" id="Fact000025">Chuo     Ward</dei:EntityAddressAddressLine3>
    <dei:EntityAddressCityOrTown contextRef="From2025-07-01to2025-12-31" id="Fact000026">Osaka</dei:EntityAddressCityOrTown>
    <dei:AmendmentFlag contextRef="From2025-07-01to2025-12-31" id="Fact000003">false</dei:AmendmentFlag>
    <dei:DocumentFiscalYearFocus contextRef="From2025-07-01to2025-12-31" id="Fact000004">2026</dei:DocumentFiscalYearFocus>
    <dei:CurrentFiscalYearEndDate contextRef="From2025-07-01to2025-12-31" id="Fact000005">--06-30</dei:CurrentFiscalYearEndDate>
    <dei:DocumentFiscalPeriodFocus contextRef="From2025-07-01to2025-12-31" id="Fact000006">Q2</dei:DocumentFiscalPeriodFocus>
    <dei:DocumentPeriodEndDate contextRef="From2025-07-01to2025-12-31" id="Fact000007">2025-12-31</dei:DocumentPeriodEndDate>
    <dei:EntityCentralIndexKey contextRef="From2025-07-01to2025-12-31" id="Fact000008">0002044241</dei:EntityCentralIndexKey>
    <THH:TermDeposit
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0040"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:TermDeposit
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0042"
      unitRef="USD"
      xsi:nil="true"/>
    <ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0050"
      unitRef="JPY"
      xsi:nil="true"/>
    <ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0051"
      unitRef="USD"
      xsi:nil="true"/>
    <THH:DeferredOfferingCost
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0107"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:DeferredOfferingCost
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0109"
      unitRef="USD"
      xsi:nil="true"/>
    <ifrs-full:NoncurrentDerivativeFinancialAssets
      contextRef="AsOf2025-06-30"
      id="xdx2ixbrl0116"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:AmountDueToRelatedParties
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0168"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:AmountDueToRelatedParties
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0170"
      unitRef="USD"
      xsi:nil="true"/>
    <THH:AssetsRetirementObligation
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0196"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:AssetsRetirementObligation
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0198"
      unitRef="USD"
      xsi:nil="true"/>
    <ifrs-full:IssuedCapitalPreferenceShares
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0273"
      unitRef="USD"
      xsi:nil="true"/>
    <THH:ShareSubscriptionReceivable
      contextRef="AsOf2025-12-31"
      id="xdx2ixbrl0278"
      unitRef="USD"
      xsi:nil="true"/>
    <THH:RevenuesFromRelatedParties
      contextRef="From2024-07-012024-12-31"
      id="xdx2ixbrl0308"
      unitRef="JPY"
      xsi:nil="true"/>
    <THH:CostOfSalesRelatedParties
      contextRef="From2024-07-012024-12-31"
      id="xdx2ixbrl0326"
      unitRef="JPY"
      xsi:nil="true"/>
    <ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="From2024-07-012024-12-31"
      id="xdx2ixbrl0387"
      unitRef="JPY"
      xsi:nil="true"/>
    <ifrs-full:CashAndCashEquivalents
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000034"
      unitRef="JPY">13348000</ifrs-full:CashAndCashEquivalents>
    <ifrs-full:CashAndCashEquivalents
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000035"
      unitRef="JPY">121343000</ifrs-full:CashAndCashEquivalents>
    <ifrs-full:CashAndCashEquivalents
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000037"
      unitRef="USD">774000</ifrs-full:CashAndCashEquivalents>
    <THH:TermDeposit
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000039"
      unitRef="JPY">1800000</THH:TermDeposit>
    <THH:AccountsReceivablethirdPartiesNet
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000044"
      unitRef="JPY">1014513000</THH:AccountsReceivablethirdPartiesNet>
    <THH:AccountsReceivablethirdPartiesNet
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000045"
      unitRef="JPY">1095397000</THH:AccountsReceivablethirdPartiesNet>
    <THH:AccountsReceivablethirdPartiesNet
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000047"
      unitRef="USD">6986000</THH:AccountsReceivablethirdPartiesNet>
    <ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000049"
      unitRef="JPY">107000</ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties>
    <THH:NetInvestmentInSubleaseCurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000053"
      unitRef="JPY">172233000</THH:NetInvestmentInSubleaseCurrent>
    <THH:NetInvestmentInSubleaseCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000054"
      unitRef="JPY">277629000</THH:NetInvestmentInSubleaseCurrent>
    <THH:NetInvestmentInSubleaseCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000056"
      unitRef="USD">1771000</THH:NetInvestmentInSubleaseCurrent>
    <ifrs-full:Inventories
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000058"
      unitRef="JPY">15255000</ifrs-full:Inventories>
    <ifrs-full:Inventories
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000059"
      unitRef="JPY">13535000</ifrs-full:Inventories>
    <ifrs-full:Inventories
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000061"
      unitRef="USD">86000</ifrs-full:Inventories>
    <ifrs-full:OtherCurrentAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000063"
      unitRef="JPY">35466000</ifrs-full:OtherCurrentAssets>
    <ifrs-full:OtherCurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000064"
      unitRef="JPY">41876000</ifrs-full:OtherCurrentAssets>
    <ifrs-full:OtherCurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000066"
      unitRef="USD">267000</ifrs-full:OtherCurrentAssets>
    <ifrs-full:CurrentAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000068"
      unitRef="JPY">1252722000</ifrs-full:CurrentAssets>
    <ifrs-full:CurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000069"
      unitRef="JPY">1549780000</ifrs-full:CurrentAssets>
    <ifrs-full:CurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000071"
      unitRef="USD">9884000</ifrs-full:CurrentAssets>
    <ifrs-full:PropertyPlantAndEquipment
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000076"
      unitRef="JPY">989408000</ifrs-full:PropertyPlantAndEquipment>
    <ifrs-full:PropertyPlantAndEquipment
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000077"
      unitRef="JPY">997299000</ifrs-full:PropertyPlantAndEquipment>
    <ifrs-full:PropertyPlantAndEquipment
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000079"
      unitRef="USD">6360000</ifrs-full:PropertyPlantAndEquipment>
    <ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000081"
      unitRef="JPY">16902000</ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates>
    <ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000082"
      unitRef="JPY">16650000</ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates>
    <ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000084"
      unitRef="USD">106000</ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates>
    <ifrs-full:RightofuseAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000086"
      unitRef="JPY">848971000</ifrs-full:RightofuseAssets>
    <ifrs-full:RightofuseAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000087"
      unitRef="JPY">683104000</ifrs-full:RightofuseAssets>
    <ifrs-full:RightofuseAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000089"
      unitRef="USD">4356000</ifrs-full:RightofuseAssets>
    <THH:FinanceLeaseRightofuseAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000091"
      unitRef="JPY">17855000</THH:FinanceLeaseRightofuseAssets>
    <THH:FinanceLeaseRightofuseAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000092"
      unitRef="JPY">14777000</THH:FinanceLeaseRightofuseAssets>
    <THH:FinanceLeaseRightofuseAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000094"
      unitRef="USD">94000</THH:FinanceLeaseRightofuseAssets>
    <ifrs-full:DeferredTaxAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000096"
      unitRef="JPY">66408000</ifrs-full:DeferredTaxAssets>
    <ifrs-full:DeferredTaxAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000097"
      unitRef="JPY">66408000</ifrs-full:DeferredTaxAssets>
    <ifrs-full:DeferredTaxAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000099"
      unitRef="USD">424000</ifrs-full:DeferredTaxAssets>
    <THH:NetInvestmentInSubleaseNoncurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000101"
      unitRef="JPY">111513000</THH:NetInvestmentInSubleaseNoncurrent>
    <THH:NetInvestmentInSubleaseNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000102"
      unitRef="JPY">59207000</THH:NetInvestmentInSubleaseNoncurrent>
    <THH:NetInvestmentInSubleaseNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000104"
      unitRef="USD">378000</THH:NetInvestmentInSubleaseNoncurrent>
    <THH:DeferredOfferingCost
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000106"
      unitRef="JPY">207471000</THH:DeferredOfferingCost>
    <ifrs-full:OtherNoncurrentAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000111"
      unitRef="JPY">162814000</ifrs-full:OtherNoncurrentAssets>
    <ifrs-full:OtherNoncurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000112"
      unitRef="JPY">152662000</ifrs-full:OtherNoncurrentAssets>
    <ifrs-full:OtherNoncurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000114"
      unitRef="USD">974000</ifrs-full:OtherNoncurrentAssets>
    <ifrs-full:NoncurrentDerivativeFinancialAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000117"
      unitRef="JPY">40000000</ifrs-full:NoncurrentDerivativeFinancialAssets>
    <ifrs-full:NoncurrentDerivativeFinancialAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000119"
      unitRef="USD">255000</ifrs-full:NoncurrentDerivativeFinancialAssets>
    <ifrs-full:NoncurrentAssets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000121"
      unitRef="JPY">2421342000</ifrs-full:NoncurrentAssets>
    <ifrs-full:NoncurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000122"
      unitRef="JPY">2030107000</ifrs-full:NoncurrentAssets>
    <ifrs-full:NoncurrentAssets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000124"
      unitRef="USD">12947000</ifrs-full:NoncurrentAssets>
    <ifrs-full:Assets
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000126"
      unitRef="JPY">3674064000</ifrs-full:Assets>
    <ifrs-full:Assets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000127"
      unitRef="JPY">3579887000</ifrs-full:Assets>
    <ifrs-full:Assets
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000129"
      unitRef="USD">22831000</ifrs-full:Assets>
    <THH:BankAndOtherBorrowing
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000137"
      unitRef="JPY">116150000</THH:BankAndOtherBorrowing>
    <THH:BankAndOtherBorrowing
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000138"
      unitRef="JPY">125806000</THH:BankAndOtherBorrowing>
    <THH:BankAndOtherBorrowing
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000140"
      unitRef="USD">802000</THH:BankAndOtherBorrowing>
    <ifrs-full:TradeAndOtherCurrentPayables
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000142"
      unitRef="JPY">258183000</ifrs-full:TradeAndOtherCurrentPayables>
    <ifrs-full:TradeAndOtherCurrentPayables
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000143"
      unitRef="JPY">179969000</ifrs-full:TradeAndOtherCurrentPayables>
    <ifrs-full:TradeAndOtherCurrentPayables
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000145"
      unitRef="USD">1148000</ifrs-full:TradeAndOtherCurrentPayables>
    <ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000147"
      unitRef="JPY">12900000</ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties>
    <ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000148"
      unitRef="JPY">12895000</ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties>
    <ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000150"
      unitRef="USD">82000</ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties>
    <THH:OtherPayablesAndAccruals
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000152"
      unitRef="JPY">305196000</THH:OtherPayablesAndAccruals>
    <THH:OtherPayablesAndAccruals
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000153"
      unitRef="JPY">174568000</THH:OtherPayablesAndAccruals>
    <THH:OtherPayablesAndAccruals
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000155"
      unitRef="USD">1113000</THH:OtherPayablesAndAccruals>
    <ifrs-full:CurrentTaxLiabilitiesCurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000157"
      unitRef="JPY">168295000</ifrs-full:CurrentTaxLiabilitiesCurrent>
    <ifrs-full:CurrentTaxLiabilitiesCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000158"
      unitRef="JPY">144638000</ifrs-full:CurrentTaxLiabilitiesCurrent>
    <ifrs-full:CurrentTaxLiabilitiesCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000160"
      unitRef="USD">922000</ifrs-full:CurrentTaxLiabilitiesCurrent>
    <ifrs-full:CurrentContractLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000162"
      unitRef="JPY">348000</ifrs-full:CurrentContractLiabilities>
    <ifrs-full:CurrentContractLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000163"
      unitRef="JPY">2631000</ifrs-full:CurrentContractLiabilities>
    <ifrs-full:CurrentContractLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000165"
      unitRef="USD">17000</ifrs-full:CurrentContractLiabilities>
    <THH:AmountDueToRelatedParties
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000167"
      unitRef="JPY">26629000</THH:AmountDueToRelatedParties>
    <ifrs-full:CurrentLeaseLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000172"
      unitRef="JPY">374687000</ifrs-full:CurrentLeaseLiabilities>
    <ifrs-full:CurrentLeaseLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000173"
      unitRef="JPY">341955000</ifrs-full:CurrentLeaseLiabilities>
    <ifrs-full:CurrentLeaseLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000175"
      unitRef="USD">2181000</ifrs-full:CurrentLeaseLiabilities>
    <THH:FinanceLeaseLiabilitiesCurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000177"
      unitRef="JPY">5276000</THH:FinanceLeaseLiabilitiesCurrent>
    <THH:FinanceLeaseLiabilitiesCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000178"
      unitRef="JPY">4929000</THH:FinanceLeaseLiabilitiesCurrent>
    <THH:FinanceLeaseLiabilitiesCurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000180"
      unitRef="USD">31000</THH:FinanceLeaseLiabilitiesCurrent>
    <ifrs-full:CurrentLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000182"
      unitRef="JPY">1267664000</ifrs-full:CurrentLiabilities>
    <ifrs-full:CurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000183"
      unitRef="JPY">987391000</ifrs-full:CurrentLiabilities>
    <ifrs-full:CurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000185"
      unitRef="USD">6296000</ifrs-full:CurrentLiabilities>
    <THH:BankAndOtherBorrowingsNoncurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000190"
      unitRef="JPY">766691000</THH:BankAndOtherBorrowingsNoncurrent>
    <THH:BankAndOtherBorrowingsNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000191"
      unitRef="JPY">734898000</THH:BankAndOtherBorrowingsNoncurrent>
    <THH:BankAndOtherBorrowingsNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000193"
      unitRef="USD">4688000</THH:BankAndOtherBorrowingsNoncurrent>
    <THH:AssetsRetirementObligation
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000195"
      unitRef="JPY">386000</THH:AssetsRetirementObligation>
    <ifrs-full:NoncurrentLeaseLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000200"
      unitRef="JPY">737903000</ifrs-full:NoncurrentLeaseLiabilities>
    <ifrs-full:NoncurrentLeaseLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000201"
      unitRef="JPY">586383000</ifrs-full:NoncurrentLeaseLiabilities>
    <ifrs-full:NoncurrentLeaseLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000203"
      unitRef="USD">3740000</ifrs-full:NoncurrentLeaseLiabilities>
    <THH:FinanceLeaseLiabilitiesNoncurrent
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000205"
      unitRef="JPY">13237000</THH:FinanceLeaseLiabilitiesNoncurrent>
    <THH:FinanceLeaseLiabilitiesNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000206"
      unitRef="JPY">10860000</THH:FinanceLeaseLiabilitiesNoncurrent>
    <THH:FinanceLeaseLiabilitiesNoncurrent
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000208"
      unitRef="USD">69000</THH:FinanceLeaseLiabilitiesNoncurrent>
    <THH:RentalDeposits
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000210"
      unitRef="JPY">90752000</THH:RentalDeposits>
    <THH:RentalDeposits
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000211"
      unitRef="JPY">90752000</THH:RentalDeposits>
    <THH:RentalDeposits
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000213"
      unitRef="USD">579000</THH:RentalDeposits>
    <ifrs-full:OtherNoncurrentLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000215"
      unitRef="JPY">16142000</ifrs-full:OtherNoncurrentLiabilities>
    <ifrs-full:OtherNoncurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000216"
      unitRef="JPY">12087000</ifrs-full:OtherNoncurrentLiabilities>
    <ifrs-full:OtherNoncurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000218"
      unitRef="USD">77000</ifrs-full:OtherNoncurrentLiabilities>
    <ifrs-full:NoncurrentLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000220"
      unitRef="JPY">1625111000</ifrs-full:NoncurrentLiabilities>
    <ifrs-full:NoncurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000221"
      unitRef="JPY">1434980000</ifrs-full:NoncurrentLiabilities>
    <ifrs-full:NoncurrentLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000223"
      unitRef="USD">9153000</ifrs-full:NoncurrentLiabilities>
    <ifrs-full:Liabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000225"
      unitRef="JPY">2892775000</ifrs-full:Liabilities>
    <ifrs-full:Liabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000226"
      unitRef="JPY">2422371000</ifrs-full:Liabilities>
    <ifrs-full:Liabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000228"
      unitRef="USD">15449000</ifrs-full:Liabilities>
    <ifrs-full:ParValuePerShare
      contextRef="AsOf2025-12-31_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000236"
      unitRef="USDPShares">0.00002</ifrs-full:ParValuePerShare>
    <ifrs-full:ParValuePerShare
      contextRef="AsOf2025-06-30_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000238"
      unitRef="USDPShares">0.00002</ifrs-full:ParValuePerShare>
    <ifrs-full:NumberOfSharesAuthorised
      contextRef="AsOf2025-12-31_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000240"
      unitRef="Shares">22500000000</ifrs-full:NumberOfSharesAuthorised>
    <ifrs-full:NumberOfSharesAuthorised
      contextRef="AsOf2025-06-30_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000242"
      unitRef="Shares">22500000000</ifrs-full:NumberOfSharesAuthorised>
    <ifrs-full:NumberOfSharesIssued
      contextRef="AsOf2025-12-31_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000244"
      unitRef="Shares">48750000</ifrs-full:NumberOfSharesIssued>
    <ifrs-full:NumberOfSharesOutstanding
      contextRef="AsOf2025-12-31_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000246"
      unitRef="Shares">48750000</ifrs-full:NumberOfSharesOutstanding>
    <ifrs-full:NumberOfSharesIssued
      contextRef="AsOf2025-06-30_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000248"
      unitRef="Shares">52046250</ifrs-full:NumberOfSharesIssued>
    <ifrs-full:NumberOfSharesOutstanding
      contextRef="AsOf2025-06-30_ifrs-full_OrdinarySharesMember"
      decimals="INF"
      id="Fact000250"
      unitRef="Shares">52046250</ifrs-full:NumberOfSharesOutstanding>
    <ifrs-full:IssuedCapitalOrdinaryShares
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000233"
      unitRef="JPY">157000</ifrs-full:IssuedCapitalOrdinaryShares>
    <ifrs-full:IssuedCapitalOrdinaryShares
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000234"
      unitRef="JPY">161000</ifrs-full:IssuedCapitalOrdinaryShares>
    <ifrs-full:IssuedCapitalOrdinaryShares
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000252"
      unitRef="USD">1000</ifrs-full:IssuedCapitalOrdinaryShares>
    <ifrs-full:ParValuePerShare
      contextRef="AsOf2025-12-31_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000257"
      unitRef="USDPShares">0.00002</ifrs-full:ParValuePerShare>
    <ifrs-full:ParValuePerShare
      contextRef="AsOf2025-06-30_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000259"
      unitRef="USDPShares">0.00002</ifrs-full:ParValuePerShare>
    <ifrs-full:NumberOfSharesAuthorised
      contextRef="AsOf2025-12-31_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000261"
      unitRef="Shares">2500000000</ifrs-full:NumberOfSharesAuthorised>
    <ifrs-full:NumberOfSharesAuthorised
      contextRef="AsOf2025-06-30_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000263"
      unitRef="Shares">2500000000</ifrs-full:NumberOfSharesAuthorised>
    <ifrs-full:NumberOfSharesIssued
      contextRef="AsOf2025-12-31_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000265"
      unitRef="Shares">2000000</ifrs-full:NumberOfSharesIssued>
    <ifrs-full:NumberOfSharesOutstanding
      contextRef="AsOf2025-12-31_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000267"
      unitRef="Shares">2000000</ifrs-full:NumberOfSharesOutstanding>
    <ifrs-full:NumberOfSharesIssued
      contextRef="AsOf2025-06-30_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000269"
      unitRef="Shares">2000000</ifrs-full:NumberOfSharesIssued>
    <ifrs-full:NumberOfSharesOutstanding
      contextRef="AsOf2025-06-30_custom_SeriesAPreferrenceSharesMember"
      decimals="INF"
      id="Fact000271"
      unitRef="Shares">2000000</ifrs-full:NumberOfSharesOutstanding>
    <ifrs-full:IssuedCapitalPreferenceShares
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000254"
      unitRef="JPY">6000</ifrs-full:IssuedCapitalPreferenceShares>
    <ifrs-full:IssuedCapitalPreferenceShares
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000255"
      unitRef="JPY">6000</ifrs-full:IssuedCapitalPreferenceShares>
    <THH:ShareSubscriptionReceivable
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000275"
      unitRef="JPY">-6000</THH:ShareSubscriptionReceivable>
    <THH:ShareSubscriptionReceivable
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000276"
      unitRef="JPY">-6000</THH:ShareSubscriptionReceivable>
    <ifrs-full:MergerReserve
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000280"
      unitRef="JPY">459207000</ifrs-full:MergerReserve>
    <ifrs-full:MergerReserve
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000281"
      unitRef="JPY">892571000</ifrs-full:MergerReserve>
    <ifrs-full:MergerReserve
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000283"
      unitRef="USD">5692000</ifrs-full:MergerReserve>
    <ifrs-full:RetainedEarnings
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000285"
      unitRef="JPY">321925000</ifrs-full:RetainedEarnings>
    <ifrs-full:RetainedEarnings
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000286"
      unitRef="JPY">264784000</ifrs-full:RetainedEarnings>
    <ifrs-full:RetainedEarnings
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000288"
      unitRef="USD">1689000</ifrs-full:RetainedEarnings>
    <ifrs-full:Equity
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000290"
      unitRef="JPY">781289000</ifrs-full:Equity>
    <ifrs-full:Equity
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000291"
      unitRef="JPY">1157516000</ifrs-full:Equity>
    <ifrs-full:Equity
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000293"
      unitRef="USD">7382000</ifrs-full:Equity>
    <ifrs-full:EquityAndLiabilities
      contextRef="AsOf2025-06-30"
      decimals="-3"
      id="Fact000295"
      unitRef="JPY">3674064000</ifrs-full:EquityAndLiabilities>
    <ifrs-full:EquityAndLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000296"
      unitRef="JPY">3579887000</ifrs-full:EquityAndLiabilities>
    <ifrs-full:EquityAndLiabilities
      contextRef="AsOf2025-12-31"
      decimals="-3"
      id="Fact000298"
      unitRef="USD">22831000</ifrs-full:EquityAndLiabilities>
    <THH:RevenueFromExternal
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000303"
      unitRef="JPY">1687519000</THH:RevenueFromExternal>
    <THH:RevenueFromExternal
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000304"
      unitRef="JPY">1689170000</THH:RevenueFromExternal>
    <THH:RevenueFromExternal
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000306"
      unitRef="USD">10772000</THH:RevenueFromExternal>
    <THH:RevenuesFromRelatedParties
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000309"
      unitRef="JPY">6842000</THH:RevenuesFromRelatedParties>
    <THH:RevenuesFromRelatedParties
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000311"
      unitRef="USD">44000</THH:RevenuesFromRelatedParties>
    <ifrs-full:Revenue
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000313"
      unitRef="JPY">1687519000</ifrs-full:Revenue>
    <ifrs-full:Revenue
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000314"
      unitRef="JPY">1696012000</ifrs-full:Revenue>
    <ifrs-full:Revenue
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000316"
      unitRef="USD">10816000</ifrs-full:Revenue>
    <THH:CostOfSalesExternal
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000321"
      unitRef="JPY">1300431000</THH:CostOfSalesExternal>
    <THH:CostOfSalesExternal
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000322"
      unitRef="JPY">1503132000</THH:CostOfSalesExternal>
    <THH:CostOfSalesExternal
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000324"
      unitRef="USD">9586000</THH:CostOfSalesExternal>
    <THH:CostOfSalesRelatedParties
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000327"
      unitRef="JPY">63502000</THH:CostOfSalesRelatedParties>
    <THH:CostOfSalesRelatedParties
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000329"
      unitRef="USD">405000</THH:CostOfSalesRelatedParties>
    <ifrs-full:CostOfSales
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000331"
      unitRef="JPY">1300431000</ifrs-full:CostOfSales>
    <ifrs-full:CostOfSales
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000332"
      unitRef="JPY">1566634000</ifrs-full:CostOfSales>
    <ifrs-full:CostOfSales
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000334"
      unitRef="USD">9991000</ifrs-full:CostOfSales>
    <ifrs-full:GrossProfit
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000336"
      unitRef="JPY">387088000</ifrs-full:GrossProfit>
    <ifrs-full:GrossProfit
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000337"
      unitRef="JPY">129378000</ifrs-full:GrossProfit>
    <ifrs-full:GrossProfit
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000339"
      unitRef="USD">825000</ifrs-full:GrossProfit>
    <ifrs-full:SellingExpense
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000344"
      unitRef="JPY">132355000</ifrs-full:SellingExpense>
    <ifrs-full:SellingExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000345"
      unitRef="JPY">106135000</ifrs-full:SellingExpense>
    <ifrs-full:SellingExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000347"
      unitRef="USD">677000</ifrs-full:SellingExpense>
    <ifrs-full:GeneralAndAdministrativeExpense
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000349"
      unitRef="JPY">228846000</ifrs-full:GeneralAndAdministrativeExpense>
    <ifrs-full:GeneralAndAdministrativeExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000350"
      unitRef="JPY">588062000</ifrs-full:GeneralAndAdministrativeExpense>
    <ifrs-full:GeneralAndAdministrativeExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000352"
      unitRef="USD">3750000</ifrs-full:GeneralAndAdministrativeExpense>
    <ifrs-full:OperatingExpense
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000354"
      unitRef="JPY">361201000</ifrs-full:OperatingExpense>
    <ifrs-full:OperatingExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000355"
      unitRef="JPY">694197000</ifrs-full:OperatingExpense>
    <ifrs-full:OperatingExpense
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000357"
      unitRef="USD">4427000</ifrs-full:OperatingExpense>
    <ifrs-full:OtherIncome
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000362"
      unitRef="JPY">11694000</ifrs-full:OtherIncome>
    <ifrs-full:OtherIncome
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000363"
      unitRef="JPY">156346000</ifrs-full:OtherIncome>
    <ifrs-full:OtherIncome
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000365"
      unitRef="USD">997000</ifrs-full:OtherIncome>
    <ifrs-full:OtherExpenseByFunction
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000367"
      unitRef="JPY">229000</ifrs-full:OtherExpenseByFunction>
    <ifrs-full:OtherExpenseByFunction
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000368"
      unitRef="JPY">30762000</ifrs-full:OtherExpenseByFunction>
    <ifrs-full:OtherExpenseByFunction
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000370"
      unitRef="USD">196000</ifrs-full:OtherExpenseByFunction>
    <ifrs-full:OtherGainsLosses
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000372"
      unitRef="JPY">11465000</ifrs-full:OtherGainsLosses>
    <ifrs-full:OtherGainsLosses
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000373"
      unitRef="JPY">125584000</ifrs-full:OtherGainsLosses>
    <ifrs-full:OtherGainsLosses
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000375"
      unitRef="USD">801000</ifrs-full:OtherGainsLosses>
    <ifrs-full:ProfitLossFromOperatingActivities
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000377"
      unitRef="JPY">37352000</ifrs-full:ProfitLossFromOperatingActivities>
    <ifrs-full:ProfitLossFromOperatingActivities
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000378"
      unitRef="JPY">-439235000</ifrs-full:ProfitLossFromOperatingActivities>
    <ifrs-full:ProfitLossFromOperatingActivities
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000380"
      unitRef="USD">-2801000</ifrs-full:ProfitLossFromOperatingActivities>
    <THH:ShareOfIncomeOfInvestmentsInAssociate
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000382"
      unitRef="JPY">6158000</THH:ShareOfIncomeOfInvestmentsInAssociate>
    <THH:ShareOfIncomeOfInvestmentsInAssociate
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000383"
      unitRef="JPY">14088000</THH:ShareOfIncomeOfInvestmentsInAssociate>
    <THH:ShareOfIncomeOfInvestmentsInAssociate
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000385"
      unitRef="USD">90000</THH:ShareOfIncomeOfInvestmentsInAssociate>
    <ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000388"
      unitRef="JPY">385660000</ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates>
    <ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000390"
      unitRef="USD">2460000</ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates>
    <ifrs-full:FinanceCosts
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000392"
      unitRef="JPY">9842000</ifrs-full:FinanceCosts>
    <ifrs-full:FinanceCosts
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000393"
      unitRef="JPY">10271000</ifrs-full:FinanceCosts>
    <ifrs-full:FinanceCosts
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000395"
      unitRef="USD">66000</ifrs-full:FinanceCosts>
    <ifrs-full:ProfitLossBeforeTax
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000397"
      unitRef="JPY">33668000</ifrs-full:ProfitLossBeforeTax>
    <ifrs-full:ProfitLossBeforeTax
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000398"
      unitRef="JPY">-49758000</ifrs-full:ProfitLossBeforeTax>
    <ifrs-full:ProfitLossBeforeTax
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000400"
      unitRef="USD">-317000</ifrs-full:ProfitLossBeforeTax>
    <ifrs-full:IncomeTaxExpenseContinuingOperations
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000402"
      unitRef="JPY">37177000</ifrs-full:IncomeTaxExpenseContinuingOperations>
    <ifrs-full:IncomeTaxExpenseContinuingOperations
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000403"
      unitRef="JPY">7382000</ifrs-full:IncomeTaxExpenseContinuingOperations>
    <ifrs-full:IncomeTaxExpenseContinuingOperations
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000405"
      unitRef="USD">47000</ifrs-full:IncomeTaxExpenseContinuingOperations>
    <ifrs-full:ComprehensiveIncome
      contextRef="From2024-07-012024-12-31"
      decimals="-3"
      id="Fact000407"
      unitRef="JPY">-3509000</ifrs-full:ComprehensiveIncome>
    <ifrs-full:ComprehensiveIncome
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000408"
      unitRef="JPY">-57140000</ifrs-full:ComprehensiveIncome>
    <ifrs-full:ComprehensiveIncome
      contextRef="From2025-07-01to2025-12-31"
      decimals="-3"
      id="Fact000410"
      unitRef="USD">-364000</ifrs-full:ComprehensiveIncome>
    <ifrs-full:WeightedAverageShares
      contextRef="From2024-07-012024-12-31"
      decimals="INF"
      id="Fact000412"
      unitRef="Shares">50750000</ifrs-full:WeightedAverageShares>
    <ifrs-full:AdjustedWeightedAverageShares
      contextRef="From2024-07-012024-12-31"
      decimals="INF"
      id="Fact000414"
      unitRef="Shares">50750000</ifrs-full:AdjustedWeightedAverageShares>
    <ifrs-full:WeightedAverageShares
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000416"
      unitRef="Shares">51628333</ifrs-full:WeightedAverageShares>
    <ifrs-full:AdjustedWeightedAverageShares
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000418"
      unitRef="Shares">51628333</ifrs-full:AdjustedWeightedAverageShares>
    <ifrs-full:WeightedAverageShares
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000420"
      unitRef="Shares">51628333</ifrs-full:WeightedAverageShares>
    <ifrs-full:AdjustedWeightedAverageShares
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000422"
      unitRef="Shares">51628333</ifrs-full:AdjustedWeightedAverageShares>
    <ifrs-full:BasicEarningsLossPerShare
      contextRef="From2024-07-012024-12-31"
      decimals="INF"
      id="Fact000424"
      unitRef="JPYPShares">-0.07</ifrs-full:BasicEarningsLossPerShare>
    <ifrs-full:DilutedEarningsLossPerShare
      contextRef="From2024-07-012024-12-31"
      decimals="INF"
      id="Fact000426"
      unitRef="JPYPShares">-0.07</ifrs-full:DilutedEarningsLossPerShare>
    <ifrs-full:BasicEarningsLossPerShare
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000428"
      unitRef="JPYPShares">-1.11</ifrs-full:BasicEarningsLossPerShare>
    <ifrs-full:DilutedEarningsLossPerShare
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000430"
      unitRef="JPYPShares">-1.11</ifrs-full:DilutedEarningsLossPerShare>
    <ifrs-full:BasicEarningsLossPerShare
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000432"
      unitRef="USDPShares">-0.01</ifrs-full:BasicEarningsLossPerShare>
    <ifrs-full:DilutedEarningsLossPerShare
      contextRef="From2025-07-01to2025-12-31"
      decimals="INF"
      id="Fact000434"
      unitRef="USDPShares">-0.01</ifrs-full:DilutedEarningsLossPerShare>
</xbrl>
