v3.25.2
Related parties - Compensations for Key Managament Personnel (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Apr. 01, 2023
Related Party [Abstract]      
Short-term employee benefits ¥ 291 ¥ 66 ¥ 83