Condensed Balance Sheet (Unaudited)	Sep. 30, 2025 USD ($)
Current assets
Prepaid expenses	$ 151,260
Total current assets	151,260
Long-term prepaid insurance	102,543
Cash and marketable securities held in Trust Account	231,493,797
Total Assets	231,747,600
Current liabilities
Accrued offering costs	75,000
Accrued expenses	29,825
Total Current Liabilities	104,825
Commitments and Contingencies (Note 5)
Class A ordinary shares subject to possible redemption, $0.0001 par value; 23,000,000 shares at redemption value of $10.06 per share	231,493,797
Shareholders’ Equity
Preference shares, $0.0001 par value per share; 1,000,000 shares authorized; none issued or outstanding
Share subscription receivable	(971,902)
Additional paid-in capital	910,371
Retained earnings	209,856
Total Shareholders’ Equity	148,978
Total Liabilities and Shareholders’ Equity	231,747,600
Common Class A [Member]
Shareholders’ Equity
Common stock value	78
Common Class B [Member]
Shareholders’ Equity
Common stock value	$ 575

Accrued ofering costs.

No definition available.

Name:	OTGA_AccruedOfferingCosts
Namespace Prefix:	OTGA_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).