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Property and Equipment, Net (Tables)
6 Months Ended
Mar. 31, 2025
Property and Equipment, Net [Abstract]  
Schedule of Property and Equipment, Net

As of March 31, 2025 and September 30, 2024, property and equipment, net consisted of the following:

 

   Yen in thousands 
   As of
March 31,
   As of
September 30,
 
   2025   2024 
Computers  ¥366   ¥ 366 
Furniture and fixtures   319    319 
Total property and equipment   685    685 
Less: Accumulated depreciation   (422)   (324)
Total property and equipment, net  ¥263   ¥361