v3.26.3
SUMMARY OF STOCK OPTION ACTIVITIES (Details) - ¥ / shares
6 Months Ended 12 Months Ended 24 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2019
Share-Based Payment Arrangement [Abstract]              
Options outstanding, beginning balance 36,756 36,756 41,158 36,756 41,158    
Weighted average exercise price, outstanding, beginning balance ¥ 2,959 ¥ 2,959 ¥ 3,231 ¥ 2,959 ¥ 3,231    
Weighted average remaining contractual term (Yrs), outstanding 4 years 3 months 7 days 5 years 3 months 7 days 6 years 6 months 18 days 4 years 9 months 7 days 5 years 9 months 7 days 7 years 29 days  
Options, granted       56,000
Weighted average exercise price, granted        
Options, forfeited/cancelled (500)        
Weighted average exercise price, forfeited/cancelled ¥ 5,500        
Options, exercised        
Weighted average exercise price, exercised        
Options outstanding, ending balance 36,756 36,756 40,658 36,756 36,756 41,158  
Weighted average exercise price, outstanding, ending balance ¥ 2,959 ¥ 2,959 ¥ 3,203 ¥ 2,959 ¥ 2,959 ¥ 3,231  
Options vested and exercisable, ending balance 30,756 24,400        
Weighted average exercise price, vested and exercisable, ending balance ¥ 2,073 ¥ 1,180        
Weighted average remaining contractual term (Yrs), vested and exercisable 3 years 8 months 12 days 3 years 9 months 18 days