>>98921824Because mononyms in modern western (American) culture are usually reserved for celebrities/artists: Prince, Sting, Slash, Flea, Usher, Drake, Eminem etc. or military call signs: Maverick, Iceman, Hangman etc.
I don't know why EN vtubers don't lean into the mononym thing. I think it would work, most people shorten the official names down to nicknames anyways, might as well be creative with it.
I don't know why EN vtubers