Balance Sheets - USD ($)	Jun. 30, 2026	Jun. 30, 2025
Current assets:
Cash	$ 171,379	$ 508
Prepaid expenses	57,453	7,735
Total current assets	228,832	8,243
Cash and marketable securities held in trust	115,226,525
Deferred offering costs		155,978
Total assets	115,455,357	164,221
Current liabilities:
Accrued expenses	90,668	26,316
Total current liabilities	100,668	426,373
Deferred Underwriting Commission	4,025,000
Total non-current liabilities	4,025,000
Total liabilities	4,125,668	426,373
Commitments and contingencies
Ordinary shares subject to possible redemption (11,500,000 shares at redemption value $115,226,525)	115,226,525
Shareholders’ deficit
Ordinary shares, $0.0001 par value; 500,000,000 shares authorized; 4,153,333 and 1,725,000 shares issued and outstanding as of June 30, 2026 and 2025, respectively	415	173
Additional paid-in capital		24,827
Accumulated deficit	(3,897,251)	(287,152)
Total shareholders’ deficit	(3,896,836)	(262,152)
TOTAL LIABILITIES, TEMPORARY EQUITY AND SHAREHOLDERS’ DEFICIT	115,455,357	164,221
Related Party [Member]
Current liabilities:
Promissory note - related party		400,057
Amount due to sponsor	$ 10,000

Deferred Underwriting Commission.

No definition available.

Name:	OCAC_DeferredUnderwritingCommission
Namespace Prefix:	OCAC_
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).