Vesper entered Tempus to have a chance at getting some poon with whoever hologirl is interested.
Why must he collab with dudes when he's not homosexual? Especially with unwanted company like that blue asshole that, let's be honest, no one really likes.
The fact that he's receiving all this hate for trying to lose his virginity makes me lose faith in the vtuber community. We should all be encouraging him and support his sex endeavors.