v3.26.1
Cover
2 Months Ended
Apr. 30, 2026
Cover [Abstract]  
Document Type S-1
Amendment Flag false
Entity Registrant Name YOUMI INC.
Entity Central Index Key 0002137360
Entity Tax Identification Number 32-0846641
Entity Incorporation, State or Country Code NV
Entity Address, Address Line One 732 S 6th Street
Entity Address, City or Town Ste V, Las Vegas
Entity Address, State or Province NV
Entity Address, Postal Zip Code 89101
City Area Code 929
Local Phone Number 282-9977
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false