>>92165635it's something like this
the TV is behind the vtuber, and both of them are facing towards the audience. so, the reflection has to show the back of the vtuber's head, since they'd be looking away from the screen.
this doesn't really make sense either since the vtuber SHOULD be looking at the game in order to play it, so ideally you'd make the vtuber's face and the game screen explicitly separate viewpoints.
