v3.26.1
Long-Term Debts - Schedule of Long-Term Debts (Details) - USD ($)
Mar. 31, 2026
Sep. 30, 2025
Schedule of Long-Term Debts [Line Items]    
Long- term $ 556,531 $ 669,805
Long- term (current portions) $ 139,307 149,767
The Shoko Chukin Bank [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 1.11%  
Start date May 26, 2020  
End date Apr. 25, 2030  
Long- term $ 58,687 73,312
Long- term (current portions) $ 19,009 20,437
Mizuho Bank [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 2.00%  
Start date Jun. 01, 2021  
End date Jun. 01, 2031  
Long- term $ 80,148 96,303
Long- term (current portions) $ 18,858 20,274
Japan Finance Corporation [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 1.11%  
Start date Jul. 16, 2020  
End date Jun. 30, 2030  
Long- term $ 100,453 125,025
Long- term (current portions) $ 34,322 36,899
Japan Finance Corporation One [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 0.46%  
Start date Jun. 09, 2020  
End date Apr. 20, 2030  
Long- term $ 59,542 74,393
Long- term (current portions) $ 19,311 20,761
Japan Finance Corporation Two [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 0.38%  
Start date Apr. 23, 2021  
End date Mar. 20, 2031  
Long- term $ 25,113 30,445
Long- term (current portions) $ 6,946 7,468
Kiraboshi Bank [Member]    
Schedule of Long-Term Debts [Line Items]    
Annual Interest Rate 0.50%  
Start date Jun. 27, 2023  
End date May 30, 2032  
Long- term $ 232,588 270,325
Long- term (current portions) $ 40,861 $ 43,928