v3.26.3
Cover
Sep. 25, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 25, 2026
Entity File Number 001-42887
Entity Registrant Name Harvard Ave Acquisition Corporation
Entity Central Index Key 0002042460
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 3rd Floor, 166 Yeongsin-ro
Entity Address, Address Line Two Yeongdengpo-gu
Entity Address, City or Town Seoul
Entity Address, Country KR
Entity Address, Postal Zip Code 07362
City Area Code +82
Local Phone Number 10-8781-0823
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Units, consisting of one Class A ordinary share, $0.0001 par value, and one Right to acquire one-tenth of one Class A ordinary share  
Title of 12(b) Security Units, consisting of one Class A ordinary share, $0.0001 par value, and one Right to acquire one-tenth of one Class A ordinary share
Trading Symbol HAVAU
Security Exchange Name NASDAQ
Class A ordinary shares, par value $0.0001 per share  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share
Trading Symbol HAVA
Security Exchange Name NASDAQ
Rights, each whole right to acquire one-tenth of one Class A ordinary share  
Title of 12(b) Security Rights, each whole right to acquire one-tenth of one Class A ordinary share
Trading Symbol HAVAR
Security Exchange Name NASDAQ