<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<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" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#Cover" roleURI="http://stagewise.net/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#BalanceSheets" roleURI="http://stagewise.net/role/BalanceSheets" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#BalanceSheetsParenthetical" roleURI="http://stagewise.net/role/BalanceSheetsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#StatementsOfOperations" roleURI="http://stagewise.net/role/StatementsOfOperations" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#StatementsOfChangesInStockholdersEquity" roleURI="http://stagewise.net/role/StatementsOfChangesInStockholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#StatementsOfCashFlows" roleURI="http://stagewise.net/role/StatementsOfCashFlows" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#OrganizationAndDescriptionOfBusiness" roleURI="http://stagewise.net/role/OrganizationAndDescriptionOfBusiness" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#GoingConcern" roleURI="http://stagewise.net/role/GoingConcern" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#SummaryOfSignificantAccountingPolicies" roleURI="http://stagewise.net/role/SummaryOfSignificantAccountingPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#CommonStock" roleURI="http://stagewise.net/role/CommonStock" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#RelatedPartyTransactions" roleURI="http://stagewise.net/role/RelatedPartyTransactions" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#CommitmentsAndContingencies" roleURI="http://stagewise.net/role/CommitmentsAndContingencies" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#IntangibleAsset" roleURI="http://stagewise.net/role/IntangibleAsset" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#ForeignCurrency" roleURI="http://stagewise.net/role/ForeignCurrency" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#SubsequentEvents" roleURI="http://stagewise.net/role/SubsequentEvents" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://stagewise.net/role/SummaryOfSignificantAccountingPoliciesPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#GoingConcernDetailsNarrative" roleURI="http://stagewise.net/role/GoingConcernDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#CommonStockDetailsNarrative" roleURI="http://stagewise.net/role/CommonStockDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#RelatedPartyTransactionsDetailsNarrative" roleURI="http://stagewise.net/role/RelatedPartyTransactionsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="stwi-20260331.xsd#IntangibleAssetDetailsNarrative" roleURI="http://stagewise.net/role/IntangibleAssetDetailsNarrative" />
    <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://stagewise.net/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/BalanceSheets" xlink:title="00000002 - Statement - BALANCE SHEETS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/BalanceSheetsParenthetical" xlink:title="00000003 - Statement - BALANCE SHEETS (Parenthetical)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/StatementsOfOperations" xlink:title="00000004 - Statement - STATEMENTS OF OPERATIONS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/StatementsOfChangesInStockholdersEquity" xlink:title="00000005 - Statement - Statements of Changes in Stockholders Equity">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaapStatementEquityComponentsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapStatementEquityComponentsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaapEquityComponentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapStatementEquityComponentsAxis" xlink:to="loc_us-gaapEquityComponentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaapEquityComponentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementEquityComponentsAxis" xlink:to="loc_us-gaapEquityComponentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaapCommonStockMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapCommonStockMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaapAdditionalPaidInCapitalMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapAdditionalPaidInCapitalMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaapRetainedEarningsMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapEquityComponentDomain" xlink:to="loc_us-gaapRetainedEarningsMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_50" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaapSharesIssued_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapSharesIssued_50" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStockholdersEquity_50" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaapStockIssuedDuringPeriodValueNewIssues_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStockIssuedDuringPeriodValueNewIssues_50" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaapStockIssuedDuringPeriodSharesNewIssues_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStockIssuedDuringPeriodSharesNewIssues_50" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapNetIncomeLoss_50" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaapSharesOutstanding_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapSharesOutstanding_50" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="stwi-20260331.xsd#stwi_StockCancelled" xlink:label="loc_stwiStockCancelled_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_stwiStockCancelled_50" xlink:type="arc" order="8" />
      <link:loc xlink:type="locator" xlink:href="stwi-20260331.xsd#stwi_StockSharescancelled" xlink:label="loc_stwiStockSharescancelled_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_stwiStockSharescancelled_50" xlink:type="arc" order="9" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/StatementsOfCashFlows" xlink:title="00000006 - Statement - STATEMENTS OF CASH FLOWS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/OrganizationAndDescriptionOfBusiness" xlink:title="999007 - Disclosure - ORGANIZATION AND DESCRIPTION OF BUSINESS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/GoingConcern" xlink:title="999008 - Disclosure - GOING CONCERN" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/SummaryOfSignificantAccountingPolicies" xlink:title="999009 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/CommonStock" xlink:title="999010 - Disclosure - COMMON STOCK" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/RelatedPartyTransactions" xlink:title="999011 - Disclosure - RELATED PARTY TRANSACTIONS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/CommitmentsAndContingencies" xlink:title="999012 - Disclosure - COMMITMENTS AND CONTINGENCIES" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/IntangibleAsset" xlink:title="999013 - Disclosure - INTANGIBLE ASSET" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/ForeignCurrency" xlink:title="999014 - Disclosure - FOREIGN CURRENCY" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/SubsequentEvents" xlink:title="999015 - Disclosure - SUBSEQUENT EVENTS" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="999016 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/GoingConcernDetailsNarrative" xlink:title="999017 - Disclosure - GOING CONCERN (Details Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/CommonStockDetailsNarrative" xlink:title="999018 - Disclosure - COMMON STOCK (Details Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="999019 - Disclosure - RELATED PARTY TRANSACTIONS (Details Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stagewise.net/role/IntangibleAssetDetailsNarrative" xlink:title="999020 - Disclosure - INTANGIBLE ASSET (Details Narrative)" />
</link:linkbase>