there's none since vtubers themselves are born from soulless hedonistic consumerism. It is designed to suck your manhood and arrest your development, putting you into this endless state of adolescence in which you will never grow out from. You're going to spend all of your time and effort, basically your essence, to an entity who will most likely never see you as a physical being. You're just a bunch of sweet messages on her screen. She will never see you as a real human bean and nor will you. Chuubas are a perfected parasocial machine and time will tell until your favourite beverage multinational company releases their own vtuber. Oh wait we already have one