Some games require you to refresh the mod list. In Koikatsu, you can try hitting in the character maker to reload the sideloader cache. Missing Dependencies:
The refers to a specific asset pack—likely for the game Koikatsu (KK) —that ports hair models from Artificial Academy 1 (AA1) for use in modern character creators. Quick Guide to Using AA1 Hair v2 aa1.hair.v2