v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES (Details Narrative)
3 Months Ended 12 Months Ended
Oct. 10, 2025
USD ($)
shares
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2026
JPY (¥)
shares
Mar. 31, 2025
JPY (¥)
shares
Dec. 31, 2025
JPY (¥)
Dec. 31, 2024
JPY (¥)
Mar. 31, 2026
JPY (¥)
Oct. 10, 2025
JPY (¥)
Product Information [Line Items]                
American depositary shares 1,250,000              
Net proceeds $ 4,302,198             ¥ 658,666,480
Foreign currency transactions   Translations of amounts in the unaudited interim condensed consolidated balance sheets, unaudited interim condensed consolidated statements of income, and unaudited interim condensed consolidated statements of cash flows from JPY into US$ as of and for the three months ended March 31, 2026 are solely for the convenience of the reader and were calculated at the noon buying rate of $1 = JPY159.08, as published in H.10 statistical release of the United States Federal Reserve Board. No representation is made that the JPY amounts could have been, or could be, converted, realized, or settled into US$ at such rate or at any other rate. Translations of amounts in the unaudited interim condensed consolidated balance sheets, unaudited interim condensed consolidated statements of income, and unaudited interim condensed consolidated statements of cash flows from JPY into US$ as of and for the three months ended March 31, 2026 are solely for the convenience of the reader and were calculated at the noon buying rate of $1 = JPY159.08, as published in H.10 statistical release of the United States Federal Reserve Board. No representation is made that the JPY amounts could have been, or could be, converted, realized, or settled into US$ at such rate or at any other rate.          
Cash | ¥         ¥ 0   ¥ 0  
Allowance for credit losses of accounts receivable   $ 49,689 ¥ 7,904,510     ¥ 7,405,870    
Total deferred expenses   202,064     22,177,409   32,144,338  
Impairment of long-lived assets | ¥     0   ¥ 0      
Deferred offering cost   1,908,972         ¥ 303,679,188  
Registration fees   109,737 17,456,929 ¥ 16,505,426        
Advertising expenses   580,492 92,344,713 26,747,826        
Grant income   $ 77,954 ¥ 12,400,890 ¥ 8,524,957        
Dilutive shares   3,000 3,000 3,000        
Accounts Receivable [Member] | Customer Concentration Risk [Member] | No Customer [Member]                
Product Information [Line Items]                
Concentration risk percentage   10.00% 10.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | No Customer [Member]                
Product Information [Line Items]                
Concentration risk percentage   10.00% 10.00%          
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | No Vendor [Member]                
Product Information [Line Items]                
Concentration risk percentage   10.00% 10.00% 10.00%        
Accounts Payable [Member] | Customer Concentration Risk [Member] | A Vendor [Member]                
Product Information [Line Items]                
Concentration risk percentage   14.20% 14.20%   21.60%      
Accounts Payable [Member] | Customer Concentration Risk [Member] | B Vendor [Member]                
Product Information [Line Items]                
Concentration risk percentage         10.10%      
Accounts Payable [Member] | Customer Concentration Risk [Member] | C Vendor [Member]                
Product Information [Line Items]                
Concentration risk percentage   12.60% 12.60%          
IPO [Member]                
Product Information [Line Items]                
Issuance of ordinary shares, shares 1,250,000