Here's another Vtuber from "R Project", who I found by checking Yatono's Twitter just now (anyone found info on this R Project? theres less info than Axel-V)
Her name is Tsuzura Amo, a virtual dragon android. she's got a cutesy type of voice and huge chest
https://www.youtube.com/watch?v=7cRkRcUE3YsChannel's been around for three months now.