v3.26.3
Contract Liabilities (Tables)
6 Months Ended
Jun. 30, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Contract liabilities
               
   As of June 30, 
   2025   2026   2026 
   JPY   JPY   US$ 
Beginning balance   158,243,945    166,892,068    1,026,333 
Deposits received from customers   527,425,898    534,896,463    3,289,444 
Amounts recognized to revenue   (309,351,064)   (322,935,511)   (1,985,951)
Less: refunds to customers   (130,000)   -    - 
Ending balance   376,188,779    378,853,020    2,329,826