v3.26.1
Cover - shares
 12 Months Ended
Feb. 28, 2026
Mar. 31, 2026
Entity Addresses [Line Items]    
Document Type 20-F  
Amendment Flag false  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Document Period End Date Feb. 28, 2026  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --02-28  
Entity File Number 001-43279  
Entity Registrant Name Micware Co., Ltd.  
Entity Central Index Key 0002083526  
Entity Incorporation, State or Country Code M0  
Entity Address, Address Line One Kobe Asahi Building 25th Floor  
Entity Address, Address Line Two 59 Naniwa-machi  
Entity Address, City or Town Chuo-ku  
Entity Address, Country JP  
Entity Address, Postal Zip Code 650-0035  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Document Accounting Standard U.S. GAAP  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   56,141,914
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction [Flag] false  
Auditor Name Marcum Asia CPAs LLP  
Auditor Location New York  
Auditor Firm ID 5395  
American depositary shares,    
Entity Addresses [Line Items]    
Title of 12(b) Security American depositary shares,  
Trading Symbol MWC  
Security Exchange Name NASDAQ  
Ordinary shares*    
Entity Addresses [Line Items]    
Title of 12(b) Security Ordinary shares*  
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One Kobe Asahi Building 25th Floor  
Entity Address, Address Line Two 59 Naniwa-machi  
Entity Address, City or Town Chuo-ku  
Entity Address, Country JP  
Entity Address, Postal Zip Code 650-0035  
City Area Code 81  
Local Phone Number 36-699-9899  
Contact Personnel Name Takuma Segawa