v3.26.1
Nature of Operations (Details Narrative) - JPY (¥)
¥ / shares in Units, ¥ in Thousands
6 Months Ended
Jan. 07, 2025
Sep. 30, 2025
Sep. 30, 2024
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Stock split ratio On January 7, 2025, the Company’s board of directors approved the change in the number of ordinary shares authorized and a sub-division of the ordinary shares issued at a ratio of 1:6, which became effective on January 7, 2025.      
Ordinary share, shares authorized 168,000,000 168,000,000   168,000,000
Ordinary share, shares issued 42,210,000 45,960,000   42,210,000
Ordinary share, par value ¥ 1.66667 ¥ 1.66667   ¥ 1.66667
Net loss   ¥ 677,602 ¥ 277,671  
Accumulated deficit   ¥ 2,460,087   ¥ 1,782,485