v3.26.1
Balance Sheets (Parenthetical) - ¥ / shares
Sep. 30, 2025
Mar. 31, 2025
Jan. 07, 2025
Statement of Financial Position [Abstract]      
Common Stock, Par or Stated Value Per Share ¥ 1.66667 ¥ 1.66667 ¥ 1.66667
Common Stock, 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