v3.26.1
Balance Sheets (Parenthetical) - ¥ / shares
Mar. 31, 2026
Mar. 31, 2025
Jan. 07, 2025
Statement of Financial Position [Abstract]      
Ordinary share, par value ¥ 1.66667 ¥ 1.66667 ¥ 1.66667
Ordinary share, shares authorized 168,000,000 168,000,000 168,000,000
Ordinary share, shares issued 45,960,000 42,210,000 42,210,000
Ordinary share, shares, outstanding 45,960,000 42,210,000