v3.26.1
Taxes - Schedule of Reconciles the Federal statutory Rate to the Group’s Effective Tax Rate (Details) - USD ($)
 6 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Effective Income Tax Rate Reconciliation [Line Items]    
U.S. federal statutory tax rate, amount $ (137,824) $ 53,440
U.S. federal statutory tax rate, percentage 21.00% 21.00%
State and local income taxes, net of federal income tax effect, amount
State and local income taxes, net of federal income tax effect, percentage
Return-to-provision true-up adjustment, amount $ (332,660)
Return-to-provision true-up adjustment, percentage 50.69%
Effect of change in tax rates, amount $ 113,629
Effect of change in tax rates, percentage (17.31%)
Loss of preferential tax treatment, amount $ 343,461
Loss of preferential tax treatment, percentage (52.33%)
Change in valuation allowance    
Non-deductible expenses, amount $ 14,528 $ (280,596)
Non-deductible expenses, percentage (2.15%) (110.26%)
Provision for income taxes, amount $ 504,937 $ (384,307)
Provision for income taxes, percentage (76.88%) (151.02%)
Japanese Statutory Rate [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Return-to-provision true-up adjustment, amount $ (332,660)
Return-to-provision true-up adjustment, percentage 50.69%
Effect of change in tax rates, amount $ 113,629
Effect of change in tax rates, percentage (17.31%)
Loss of preferential tax treatment, amount $ 343,461
Loss of preferential tax treatment, percentage (52.33%)
Change in valuation allowance    
Non-deductible expenses, amount $ 14,528 $ (280,596)
Non-deductible expenses, percentage (2.14%) (110.26%)
Provision for income taxes, amount $ 504,937 $ (384,307)
Provision for income taxes, percentage (76.88%) (151.02%)
Japan statutory income tax rate, amount $ (227,016) $ 88,024
Japan statutory income tax rate, percentage 34.59% 34.59%
Japan [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
U.S. federal statutory tax rate, percentage 34.59% 34.59%
Foreign tax effects, amount $ (184,054) $ (237,639)
Foreign tax effects, percentage 28.04% (93.38%)
Cayman Islands [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, amount $ 81,637
Foreign tax effects, percentage (12.44%)
Cayman Islands [Member] | Japanese Statutory Rate [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, amount $ 134,468
Foreign tax effects, percentage (2049.00%)
Other countries [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, amount $ (82,127) $ 36,407
Foreign tax effects, percentage 12.51% 14.31%
Change in valuation allowance    
Change in valuation allowance, amount $ 183
Change in valuation allowance, percentage (0.03%)
Other countries [Member] | Japanese Statutory Rate [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, amount $ (141,996) $ 48,169
Foreign tax effects, percentage 21.64% 18.93%
Change in valuation allowance    
Change in valuation allowance, amount $ 183
Change in valuation allowance, percentage (0.03%)
Singapore [Member]    
Change in valuation allowance    
Change in valuation allowance, amount $ 736,560
Change in valuation allowance, percentage (112.23%)
Singapore [Member] | Japanese Statutory Rate [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, amount $ (87,824) $ (283,985)
Foreign tax effects, percentage 13.38% (111.60%)
Change in valuation allowance    
Change in valuation allowance, amount $ 736,560
Change in valuation allowance, percentage (112.23%)
Taiwan [Member]    
Effective Income Tax Rate Reconciliation [Line Items]    
Foreign tax effects, percentage 20.00%  
Change in valuation allowance    
Change in valuation allowance, amount $ (48,396) $ 44,081
Change in valuation allowance, percentage 7.37% 17.32%
Taiwan [Member] | Japanese Statutory Rate [Member]    
Change in valuation allowance    
Change in valuation allowance, amount $ (48,396) $ 44,081
Change in valuation allowance, percentage 7.37% 17.32%