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Summary of Significant Accounting Policies - Schedule of Concentration of Major Customers and Suppliers (Details) - USD ($) | 6 Months Ended
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Mar. 31, 2026 | Sep. 30, 2025 | Mar. 31, 2025
Customer Concentration Risk [Member] | Customer A [Member] | Revenue Benchmark [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Revenues |  | $ 3,543,677 |  | $ 3,007,516
Concentration risk, percentage |  | 23.90% |  | 21.90%
Customer Concentration Risk [Member] | Customer A [Member] | Accounts Receivable [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 21.20% | 11.40% |
Accounts receivable, net |  | $ 262,535 | $ 114,582 |
Customer Concentration Risk [Member] | Customer B [Member] | Revenue Benchmark [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Revenues |  | $ 1,998,160 |  | $ 2,454,365
Concentration risk, percentage |  | 13.50% |  | 17.90%
Customer Concentration Risk [Member] | Customer B [Member] | Accounts Receivable [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 11.90% | 8.40% |
Accounts receivable, net |  | $ 146,894 | $ 83,948 |
Customer Concentration Risk [Member] | Customer [Member] | Revenue Benchmark [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Revenues |  | $ 5,541,837 |  | $ 5,461,881
Concentration risk, percentage |  | 37.40% |  | 39.80%
Customer Concentration Risk [Member] | Customer [Member] | Accounts Receivable [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 33.10% | 19.80% |
Accounts receivable, net |  | $ 409,429 | $ 198,530 |
Supplier Concentration Risk [Member] | Cost of revenues [Member] | Panaicia Pty Ltd (note) [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage | [1] | 63.10% |  | 61.90%
Cost of revenue | [1] | $ 8,695,611 |  | $ 7,594,925
Supplier Concentration Risk [Member] | Cost of revenues [Member] | Supplier A [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 12.10% |  | 12.70%
Cost of revenue |  | $ 1,664,202 |  | $ 1,562,403
Supplier Concentration Risk [Member] | Cost of revenues [Member] | Supplier [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 75.20% |  | 74.60%
Cost of revenue |  | $ 10,359,813 |  | $ 9,157,328
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Panaicia Pty Ltd (note) [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage | [1] | 25.50% |  |
Accounts payables, net | [1] | $ 199,565 |  |
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Supplier A [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 31.30% | 26.70% |
Accounts payables, net |  | $ 244,932 | $ 198,892 |
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Supplier [Member] |  |  |  |
Major customers representing more than 10% of the Company’s revenues |  |  |  |
Concentration risk, percentage |  | 56.80% | 26.70% |
Accounts payables, net |  | $ 444,497 | $ 198,892 |
[1] | Panaicia Pty Ltd is a related party of the Company, in which its sole director and sole shareholder is one of the directors of the Company, Mr. Wai Yiu Yau.

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