v3.25.1
Cover
 6 Months Ended
Sep. 30, 2024
Entity Addresses [Line Items]  
Document Type F-4/A
Amendment Flag true
Amendment Description Amendment No. 4
Entity Registrant Name HCYC Holding Company
Entity Central Index Key 0002006779
Entity Primary SIC Number 6770
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One Suite 1008
Entity Address, Address Line Two 10/F., Ocean Centre, Harbour City
Entity Address, Address Line Three 5 Canton Road
Entity Address, City or Town Tsim Sha Tsui
Entity Address, Country HK
City Area Code +852
Local Phone Number 3795 2518
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 1345 Avenue of the Americas FL 33
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10105
City Area Code (212)
Local Phone Number 612-1400
Contact Personnel Name Celine & Partners, PLLC