So Haruto thinks the game club project (more specifically just one person) is not famous enough in the Vtuber world and he wanted to test that. Ryo and Miria helps out with his test too.
I didn’t clip this, the video belongs to the original owner(game club project), I just translate it
Game Club Project’s channel
Their individual channels
(Senbon Zakura) -Piano ballade ver.
I am by no means a good translator, my japanese skill is just from anime/games