>>25143066Hmm... not sure how to pinpoint it, but from what little I've seen, he has issues with matching the vibe of his collab partners. Matsuri for example has her common "thing" where she spouts extremely lewd jokes and expects the other party to tsukkomi her to keep the dynamic going, but Aruran just went with it, but also in a way that was confusing and hard to give a reverse tsukkomi to.
I don't know his solo streams, but I watched some of his UPLP streams, and there was a lot of dead air while he was doing minecraft shit.
These two instances kinda filtered me from him, and of course even before all that his design itself might not be appealing to everyone compared to Roberu.
In comparison, Roberu's dynamic with the other girls is a very common setup in anime so it's doubly hilarious when they port it to VTubers.
