Equity Components [Axis] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Concentration Risk Benchmark [Axis] Revenue Benchmark [Member] Concentration Risk Type [Axis] Customer Concentration Risk [Member] Customer [Axis] One Customer [Member] Accounts Receivable [Member] No Customer [Member] Three Customer [Member] Total Purchases [Member] Supplier Concentration Risk [Member] Two Suppliers [Member] One Suppliers [Member] Accounts Payable [Member] Three Suppliers [Member] Finite-Lived Intangible Assets by Major Class [Axis] Software [Member] Statistical Measurement [Axis] Minimum [Member] Maximum [Member] Patents [Member] Trademarks [Member] Long-Lived Tangible Asset [Axis] Furniture and Fixtures [Member] Tooling and Equipment [Member] Computer and Other Equipment [Member] Vehicles [Member] Software Work in Progress [Member] Related and Nonrelated Parties [Axis] ZESTO Consulting LLC [Member] Subsequent Event Type [Axis] Subsequent Event [Member] Sale of Stock [Axis] IPO [Member] Product and Service [Axis] Sales of Software [Member] Consulting and Support Services [Member] Spirit Advisors, LLC [Member] Title and Position [Axis] Director [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] ASSETS Current Assets: Cash and cash equivalents Accounts receivable, net Deferred offering costs Prepaid expenses and other current assets Total Current Assets Non-current Assets: Restricted cash Property and equipment, net Operating lease right-of-use assets, net Intangible assets, net Investments - Non-current Other assets Total Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Current Liabilities: Trade accounts payable Other payables Accrued expenses Deferred revenue - Current Current portion of operating lease liabilities Total Current Liabilities Non-current Liabilities: Non-current operating lease liabilities Deferred revenue - Non-current Other liabilities Total Liabilities Commitment and Contingencies (Note 8) SHAREHOLDERS’ EQUITY: Ordinary shares, JPY1.66667 par value - 168,000,000 shares authorized as of September 30, 2025 and March 31, 2025; 45,960,000 shares and 42,210,000 shares issued and outstanding as of September 30, 2025 and March 31, 2025, respectively Additional paid-in capital Accumulated deficit Total Shareholders’ Equity  /(Deficit) Total Liabilities & Shareholders’ Equity Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized Ordinary share, shares issued Ordinary share, shares outstanding Income Statement [Abstract] Revenue Cost of revenue Gross profit Operating expenses: Research and development Selling, general and administrative expenses Total operating expenses Loss from operations Other expenses, net Interest expenses Loss before income taxes Income tax expenses Net loss Net loss per share attributable to shareholders, basic Net loss per share attributable to shareholders, diluted Weighted-average shares outstanding used to compute net loss per share, basic Weighted-average shares outstanding used to compute net loss per share, diluted Statement [Table] Statement [Line Items] Beginning balance, value Balance, shares Issuance of ordinary shares upon initial public offering, net of offering costs Issuance of ordinary shares upon initial public offering, net of offering costs, shares Stock-based compensation Net loss Ending balance, value Balance, shares Statement of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net loss to net cash used in operating activities: Depreciation and amortization Noncash lease expenses Stock option expense Changes in operating assets and liabilities: Accounts receivable Related party receivable  s Prepaid expenses and other current assets Other assets Accounts payable and accrued expenses Deferred revenue Operating lease liabilities Other liabilities Net cash used in operating activities Cash flows from investing activities: Purchase of property and equipment Purchase of intangible assets Net cash used in investing activities Cash flows from financing activities: Payment for deferred offering costs Proceed from issuance of shares Net cash provided by/(used in) financing activities Net increase/(decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Reconciliation of cash, cash equivalents and restricted cash Cash and cash equivalents Restricted cash Total cash, cash equivalents and restricted cash Organization, Consolidation and Presentation of Financial Statements [Abstract] Nature of Operations Accounting Policies [Abstract] Summary of Significant Accounting Policies Prepaid Expenses And Other Current Assets Prepaid Expenses and Other Current Assets Property, Plant and Equipment [Abstract] Property and Equipment, Net Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets, Net Leases Leases Other Payables Other Payables Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Earnings Per Share [Abstract] Net Loss per Share Equity [Abstract] Shareholders’ Equity/(Deficit) Revenue from Contract with Customer [Abstract] Revenue Cost Of Revenue Cost of revenue Share-Based Payment Arrangement [Abstract] Share-based Compensation Consulting Agreement Consulting Agreement Related Party Transactions [Abstract] Related Party Subsequent Events [Abstract] Subsequent Events Basis of Presentation Use of Estimates Revenue Recognition Segment Information Concentration of Customers and Vendors Cash and Cash Equivalents, and Restricted Cash Accounts Receivable, Net Deferred Offering Costs Property and Equipment, Net Intangible Assets, Net Impairment or Disposal of Long-Lived Assets Leases Investments Fair Value of Financial Instruments Foreign Currency Deferred Revenue Cost of Revenue Research and Development Costs Advertising Costs Income Taxes Share-based compensation Net Loss per Share Recently Issued Accounting Pronouncements Schedule of Estimated Useful Lives Schedule of Prepaid Expenses and Other Current Assets Schedule of Plant and Equipment, Net Schedule of Intangible Assets Schedule of Operating Lease Right of Use Assets and Lease Liabilities Schedule of Contractual Maturities of Operating Lease Liabilities Schedule of Operating Leases Schedule of Other Payables Schedule of Basic and Diluted Net Loss Per Share Schedule of Disaggregation of Revenue Schedule of Activity in Deferred Revenue Schedule of Cost of Revenue by Major Source Schedule of Significant Assumptions Used to Estimate the Fair Value of Stock Options Schedule of Stock Option Activity Under the Plan Schedule of Activity for Non-Vested Stock Options Stock split ratio Ordinary share, shares authorized Ordinary share, par value Net loss Accumulated deficit Property, Plant and Equipment [Table] Property, Plant and Equipment [Line Items] Estimated useful life Nature of Operation, Product Information, Concentration of Risk [Table] Product Information [Line Items] Number of operating segment Concentration risk percentage Intangible asset useful life Advertising and marketing costs Prepaid Expense and Other Assets, Current [Abstract] Prepaid expenses Deposits Consumption taxes paid Others Total prepaid expenses and other current assets Total property and equipment, gross Less: Accumulated depreciation Total property and equipment, net Depreciation expenses Intangible Asset, Finite-Lived [Table] Finite-Lived Intangible Assets [Line Items] Total intangible assets, gross Less: Accumulated amortization Total intangible assets, net Amortization expenses on intangible assets Schedule Of Operating Lease Right Of Use Assets And Lease Liabilities Operating lease assets Lease Liabilities Operating lease liabilities - Current Operating lease liabilities - Non-current Schedule Of Contractual Maturities Of Operating Lease Liabilities 2026 (remaining) 2027 2028 2029 2030 Total lease payments Less amounts representing interest Present value of lease payments Less: current portion Non-current lease liabilities Total operating lease cost Cash paid for amounts included in the measurement of the operating lease liability Weighted average remaining lease term (years) Weighted average discount rate Schedule Of Other Payables Outsourcing fees Professional fees Marketing costs Research and development   costs Income tax withholding Compensations Business tax payable Others Total other payables Loss Contingencies [Table] Loss Contingencies [Line Items] Commitments under purchase or guarantee arrangements Legal Matters Unpaid system development fees Research and development costs Unpaid service fees Percentage of accruing interest rate Loss contingency, damages paid, value Litigation Settlement, Loss Litigation Settlement Interest Loss Contingency Accrual Litigation settlement expense Net loss attributable Weighted average ordinary shares outstanding, basic Weighted average ordinary shares outstanding, diluted Basic net loss per ordinary share Diluted net loss per ordinary share Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary, Sale of Stock [Line Items] Ordinary share voting rights, description Number of ordinary shares Sale of stock, price per share Proceeds from issuance initial public offering Disaggregation of Revenue [Table] Disaggregation of Revenue [Line Items] Total Deferred revenue, beginning of period Deferred revenue, end of period Revenue recognized in the period from amounts included in deferred revenue at the beginning of period Revenue expected recognize Revenue remaining performance obligation DisclosureCostOfRevenueTable [Table] DisclosureCostOfRevenueLineItems [Line Items] Total Expected term Expected volatility Expected dividend rate Risk-free rate Options, vested, beginning balance Weighted-average grant-date fair value per option, beginning balance Options, vested Weighted-average grant-date fair value per option, vested Options, vested, ending balance Weighted-average grant-date fair value per option, ending balance Weighted-average exercise price Weighted-average remaining contractual term (years) Number of options, non-vested, beginning balance Weighted-average grant-date fair value per option, beginning balance Options, vested Number of options, non-vested, ending balance Weighted-average grant-date fair value per option, ending balance Stock options to purchase of shares Exercise price Fair value of stock options as of grant date, per share Share-based compensation expenses Defined Benefit Plan [Table] Defined Benefit Plan Disclosure [Line Items] Cash consideration Percentage of issued and outstanding Percentage of diluted number of ordinary shares Exercise price Related Party Transaction [Table] Related Party Transaction [Line Items] Compensation paid Subsequent Event [Table] Subsequent Event [Line Items] The entire disclosure of other payable. The tabular disclosure of other payable. Outsourcing fees. Other professional fees. Other sales and marketing. Other income tax withholding. Other compensations. Other business tax payable. Other notes. Unpaid system development fees. ZESTO Consulting LLC [Member] Other research and development. Unpaid service fees. Percentage of accruing interest rate. The entire disclosure of revenue cost of revenue disclosure. Tabular disclosure of Cost of Revenue by Major Source. Noncash lease expenses. Tooling and Equipment [Member] Computer and Other Equipment [Member] Software [Member] The entire disclosure of prepaid expenses and other current assets disclosure. One Customer [Member] Weighted-average grant-date fair value per option vested. No Customer [Member] The entire disclosure consulting agreement. Spirit Advisors, LLC [Member] Percentage of issued and outstanding. Percentage of diluted number of ordinary shares. Three Customer [Member] Total Purchases [Member] Two Suppliers [Member] One Suppliers [Member] Three Suppliers [Member] Software Work in Progress [Member] Sales of Software [Member] Consulting and Support Services [Member] Assets, Current Assets Equity, Attributable to Parent Liabilities and Equity Gross Profit Operating Expenses Operating Income (Loss) Nonoperating Income (Expense) Interest Expense, Nonoperating Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Shares, Outstanding Increase (Decrease) in Accounts Receivable Increase (Decrease) in Accounts and Other Receivables Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Other Operating Assets Increase (Decrease) in Other Operating Liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments to Acquire Property, Plant, and Equipment Payments to Acquire Intangible Assets Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Payments of Financing Costs Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Restricted Cash and Cash Equivalent Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Lessee, Operating Leases [Text Block] OtherPayablesTextBlock Revenue from Contract with Customer [Text Block] CostOfRevenueDisclosureTextBlock ConsultingAgreementTextBlock Property, Plant and Equipment, Policy [Policy Text Block] Intangible Assets, Finite-Lived, Policy [Policy Text Block] Lessee, Leases [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Net Lessee, Operating Lease, Liability, to be Paid Lessee, Operating Lease, Liability, Undiscounted Excess Amount OtherNotes Other Notes Payable Contract with Customer, Liability Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number SharebasedCompensationArrangementBySharebasedPaymentAwardWeightedAverageGrantDateFairValueOptionsVested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Class of Warrant or Right, Exercise Price of Warrants or Rights