Borrowings (Details) ¥ in Millions |
12 Months Ended | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jan. 19, 2026
HKD ($)
|
Jan. 19, 2026
USD ($)
|
Jun. 27, 2025
HKD ($)
|
Jun. 27, 2025
USD ($)
|
Apr. 14, 2025
HKD ($)
|
Apr. 14, 2025
USD ($)
|
Sep. 25, 2024
HKD ($)
|
Sep. 25, 2024
USD ($)
|
Mar. 31, 2023
USD ($)
|
Mar. 31, 2023
JPY (¥)
|
Sep. 27, 2022
USD ($)
|
Sep. 27, 2022
JPY (¥)
|
Mar. 31, 2026
HKD ($)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
USD ($)
ft²
|
Mar. 31, 2024
USD ($)
|
Apr. 14, 2026 |
Mar. 31, 2026
USD ($)
|
Mar. 31, 2026
JPY (¥)
|
Mar. 31, 2025
JPY (¥)
ft²
|
Sep. 22, 2023 |
Mar. 31, 2023
JPY (¥)
|
|
| Borrowings [Line Items] | ||||||||||||||||||||||
| Aggregate credit line | $ 15,000,000 | $ 1,900,000 | $ 18,000,000 | $ 2,300,000 | $ 10,000,000 | $ 1,300,000 | $ 61,300,000 | ¥ 8,150.0 | $ 33,000,000 | $ 4,200,000 | ||||||||||||
| Interest rate | 4.68% | 4.68% | 0.70% | 0.70% | 2.00% | 2.00% | ||||||||||||||||
| Aggregate borrowed amount | $ 61,300,000 | ¥ 8,150.0 | $ 32,400,000 | $ 4,100,000 | ||||||||||||||||||
| Net outstanding balance | $ 3,400,000 | |||||||||||||||||||||
| Unamortized loan service | 643,438 | ¥ 85.6 | ||||||||||||||||||||
| Maturity date | Apr. 30, 2026 | Apr. 30, 2027 | Apr. 30, 2026 | Apr. 30, 2026 | ||||||||||||||||||
| Bears interest rate, percentage | 1.20% | 1.20% | 1.20% | 1.20% | ||||||||||||||||||
| Outstanding balance loan | $ 42,300,000 | ¥ 6,730.0 | ||||||||||||||||||||
| Interest rate, description | The loan bears an interest rate of TIBOR (3M)+6.0% (in the case EBITDA exceeds ¥0) or TIBOR (3M)+0.7% (in the case EBITDA is ¥0 or less). | The loan bears an interest rate of TIBOR (3M)+6.0% (in the case EBITDA exceeds ¥0) or TIBOR (3M)+0.7% (in the case EBITDA is ¥0 or less). | ||||||||||||||||||||
| Interest expenses | $ 1,836,135 | $ 1,566,950 | $ 1,588,395 | |||||||||||||||||||
| Area of Land | ft² | 16,165 | 16,165 | ||||||||||||||||||||
| Revolving loan facility | $ 100,000,000 | $ 12,800,000 | ||||||||||||||||||||
| Agreement loan amount | five years | five years | ||||||||||||||||||||
| Borrowed an aggregate amount | $ 56.7 | 7,200,000 | ||||||||||||||||||||
| Borrowings [Member] | ||||||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||||||
| Net outstanding balance | $ 60,600,000 | $ 2,300,000 | 3,400,000 | ¥ 340.1 | ¥ 8,100.0 | |||||||||||||||||
| Repayment of debt | $ 4,100,000 | |||||||||||||||||||||
| Borrowings [Member] | Revolving Loan Facility Agreement [Member] | ||||||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||||||
| Net outstanding balance | $ 18,100,000 | $ 2,300,000 | ||||||||||||||||||||
| Mr. Kanayama [Member] | ||||||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||||||
| Maturity date | Mar. 31, 2027 | Mar. 31, 2027 | ||||||||||||||||||||
| Mr. Kanayama [Member] | Borrowings [Member] | ||||||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||||||
| Maturity date | Aug. 04, 2026 | Aug. 04, 2026 | ||||||||||||||||||||
| Borrowing [Member] | ||||||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||||||
| Weighted average interest rates | 2.32% | 1.69% | 1.19% | 2.32% | 2.32% | 1.69% | ||||||||||||||||