v3.26.1
Share-based Payments - Schedule of Fair Value Measurement of Cash Settled Share-based Payments (Details)
12 Months Ended
Mar. 31, 2026
JPY (¥)
yr
¥ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Weighted average fair value | ¥ ¥ 1,998
Valuation method used Monte-Carlo simulation
Fair value of share at the end of the period ¥ 3,393
Minimum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Exercise price ¥ 1,300
Exercise period | yr 7
Expected volatility 39.90%
Risk-free interest rate 2.10%
Maximum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Exercise price ¥ 1,750
Exercise period | yr 9.1
Expected volatility 41.60%
Risk-free interest rate 2.30%