<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!--XBRL Document Created with XBRLMaster-->
<!--Version: 2.3.08-->
<!--Based on XBRL 2.1-->
<!--Date of creation: 07/13/2026-->
<!--Software architectural design and coding: A'c Dharmapremananda Avt.-->
<!--Copyright (c) 2026 I-NET Business Solutions, Inc. All Rights Reserved.-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://jfil.com/role/Cover" xlink:href="jfil-20260531.xsd#Cover" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/BalanceSheets" xlink:href="jfil-20260531.xsd#BalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/BalanceSheetsParenthetical" xlink:href="jfil-20260531.xsd#BalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/StatementsOfOperationsUnaudited" xlink:href="jfil-20260531.xsd#StatementsOfOperationsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/StatementsOfChangesInStockholdersDeficitUnaudited" xlink:href="jfil-20260531.xsd#StatementsOfChangesInStockholdersDeficitUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/StatementsOfCashFlowsUnaudited" xlink:href="jfil-20260531.xsd#StatementsOfCashFlowsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/InsiderTradingArrangements" xlink:href="jfil-20260531.xsd#InsiderTradingArrangements" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/OrganizationAndOperations" xlink:href="jfil-20260531.xsd#OrganizationAndOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="jfil-20260531.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/GoingConcern" xlink:href="jfil-20260531.xsd#GoingConcern" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/PrepaidExpense" xlink:href="jfil-20260531.xsd#PrepaidExpense" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/RelatedPartyTransactions" xlink:href="jfil-20260531.xsd#RelatedPartyTransactions" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/AccruedOfficerCompensation" xlink:href="jfil-20260531.xsd#AccruedOfficerCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/SegmentReporting" xlink:href="jfil-20260531.xsd#SegmentReporting" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/SubsequentEvents" xlink:href="jfil-20260531.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="jfil-20260531.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/GoingConcernDetailsNarrative" xlink:href="jfil-20260531.xsd#GoingConcernDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/PrepaidExpenseDetailsNarrative" xlink:href="jfil-20260531.xsd#PrepaidExpenseDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:href="jfil-20260531.xsd#RelatedPartyTransactionsDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://jfil.com/role/AccruedOfficerCompensationDetailsNarrative" xlink:href="jfil-20260531.xsd#AccruedOfficerCompensationDetailsNarrative" xlink:type="simple" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/Cover" xlink:title="00000001 - Document - Cover Page Information">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract" xlink:label="loc_deiCover" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/BalanceSheets" xlink:title="110200 - Statement - BALANCE SHEETS" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/BalanceSheetsParenthetical" xlink:title="110201 - Statement - BALANCE SHEETS (Parenthetical)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/StatementsOfOperationsUnaudited" xlink:title="124100 - Statement - STATEMENTS OF OPERATIONS (UNAUDITED)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/StatementsOfChangesInStockholdersDeficitUnaudited" xlink:title="148600 - Statement - STATEMENTS OF CHANGES IN STOCKHOLDERS DEFICIT (UNAUDITED)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" order="2000" xbrldt:contextElement="segment" xbrldt:closed="true" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaapStatementEquityComponentsAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapStatementEquityComponentsAxis" order="1020" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaapEquityComponentDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapStatementEquityComponentsAxis" xlink:to="loc_us-gaapEquityComponentDomain" order="1030" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaapEquityComponentDomain_10" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaapStatementEquityComponentsAxis" xlink:to="loc_us-gaapEquityComponentDomain_10" order="1040" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaapCommonStockMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapCommonStockMember" order="1021" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaapAdditionalPaidInCapitalMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapAdditionalPaidInCapitalMember" order="1022" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaapRetainedEarningsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapRetainedEarningsMember" order="1023" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaapSharesIssued" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapSharesIssued" order="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStockholdersEquity" order="2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapNetIncomeLoss" order="3" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/StatementsOfCashFlowsUnaudited" xlink:title="170000 - Statement - STATEMENTS OF CASH FLOWS (UNAUDITED)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/InsiderTradingArrangements" xlink:title="170001 - Disclosure - Insider Trading Arrangements" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/OrganizationAndOperations" xlink:title="200000 - Disclosure - ORGANIZATION AND OPERATIONS" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="290000 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/GoingConcern" xlink:title="290001 - Disclosure - GOING CONCERN" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/PrepaidExpense" xlink:title="290002 - Disclosure - PREPAID EXPENSE" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/RelatedPartyTransactions" xlink:title="845000 - Disclosure - RELATED PARTY TRANSACTIONS" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/AccruedOfficerCompensation" xlink:title="845001 - Disclosure - ACCRUED OFFICER COMPENSATION" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/SegmentReporting" xlink:title="845002 - Disclosure - SEGMENT REPORTING" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/SubsequentEvents" xlink:title="942000 - Disclosure - SUBSEQUENT EVENTS" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="942001 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/GoingConcernDetailsNarrative" xlink:title="942002 - Disclosure - GOING CONCERN (Details Narrative)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/PrepaidExpenseDetailsNarrative" xlink:title="942003 - Disclosure - PREPAID EXPENSE (Details Narrative)" />
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="942004 - Disclosure - RELATED PARTY TRANSACTIONS (Details Narrative)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" order="2000" xbrldt:contextElement="segment" xbrldt:closed="true" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateAxis" xlink:label="loc_us-gaapAwardDateAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapAwardDateAxis" order="1020" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaapAwardDateDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapAwardDateAxis" xlink:to="loc_us-gaapAwardDateDomain" order="1030" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaapAwardDateDomain_10" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaapAwardDateAxis" xlink:to="loc_us-gaapAwardDateDomain_10" order="1040" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="jfil-20260531.xsd#jfil_NovemberTwentySeventeenMember" xlink:label="loc_jfilNovemberTwentySeventeenMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapAwardDateDomain" xlink:to="loc_jfilNovemberTwentySeventeenMember" order="1021" />
    <link:loc xlink:type="locator" xlink:href="jfil-20260531.xsd#jfil_DueToRelatedPartyCurrentAndNoncurrent" xlink:label="loc_jfilDueToRelatedPartyCurrentAndNoncurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_jfilDueToRelatedPartyCurrentAndNoncurrent" order="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfessionalFees" xlink:label="loc_us-gaapProfessionalFees" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapProfessionalFees" order="2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherExpenses" xlink:label="loc_us-gaapOtherExpenses" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapOtherExpenses" order="3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapAccountsPayableCurrent" order="4" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty" xlink:label="loc_us-gaapRelatedPartyTransactionPurchasesFromRelatedParty" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapRelatedPartyTransactionPurchasesFromRelatedParty" order="5" />
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://jfil.com/role/AccruedOfficerCompensationDetailsNarrative" xlink:title="942005 - Disclosure - ACCRUED OFFICER COMPENSATION (Details Narrative)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" order="2000" xbrldt:contextElement="segment" xbrldt:closed="true" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateAxis" xlink:label="loc_us-gaapAwardDateAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapAwardDateAxis" order="1010" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaapAwardDateDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapAwardDateAxis" xlink:to="loc_us-gaapAwardDateDomain" order="1020" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain" xlink:label="loc_us-gaapAwardDateDomain_10" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaapAwardDateAxis" xlink:to="loc_us-gaapAwardDateDomain_10" order="1030" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" order="1030" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" order="1040" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain_10" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain_10" order="1050" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaapRelatedPartyTransactionsByRelatedPartyAxis" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapRelatedPartyTransactionsByRelatedPartyAxis" order="1050" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaapRelatedPartyDomain" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapRelatedPartyTransactionsByRelatedPartyAxis" xlink:to="loc_us-gaapRelatedPartyDomain" order="1060" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaapRelatedPartyDomain_10" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaapRelatedPartyTransactionsByRelatedPartyAxis" xlink:to="loc_us-gaapRelatedPartyDomain_10" order="1070" xbrldt:contextElement="segment" />
    <link:loc xlink:type="locator" xlink:href="jfil-20260531.xsd#jfil_DecemberFourTwoThousandFifteenMember" xlink:label="loc_jfilDecemberFourTwoThousandFifteenMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapAwardDateDomain" xlink:to="loc_jfilDecemberFourTwoThousandFifteenMember" order="1051" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmploymentContractsMember" xlink:label="loc_us-gaapEmploymentContractsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_us-gaapEmploymentContractsMember" order="1052" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_PresidentMember" xlink:label="loc_srtPresidentMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapRelatedPartyDomain" xlink:to="loc_srtPresidentMember" order="1053" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredCompensationLiabilityCurrent" xlink:label="loc_us-gaapDeferredCompensationLiabilityCurrent" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapDeferredCompensationLiabilityCurrent" order="1" />
    <link:loc xlink:type="locator" xlink:href="jfil-20260531.xsd#jfil_TermPeriodOfAgreement" xlink:label="loc_jfilTermPeriodOfAgreement" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_jfilTermPeriodOfAgreement" order="2" />
    <link:loc xlink:type="locator" xlink:href="jfil-20260531.xsd#jfil_CompensationArrangementsWithIndividualExecutivesDescription" xlink:label="loc_jfilCompensationArrangementsWithIndividualExecutivesDescription" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_jfilCompensationArrangementsWithIndividualExecutivesDescription" order="3" />
  </link:definitionLink>
</link:linkbase>
