v3.26.1
Schedule of Intangible Assets (Details) - JPY (¥)
¥ in Thousands
Sep. 30, 2025
Mar. 31, 2025
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross ¥ 12,877 ¥ 7,565
Less: Accumulated amortization (572) (461)
Total intangible assets, net 12,305 7,104
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross 2,189 2,101
Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross 422 773
Software Work in Progress [Member]    
Finite-Lived Intangible Assets [Line Items]    
Total intangible assets, gross ¥ 10,266 ¥ 4,691