Why aren't there more anime/manga characters like this?
You mean a whore? There´s nothing fun with sluts. Why do you think Darkness in Konosuba is the least liked girl?
>not liking best girl
Regular yami is so boring
She´s boring because they´re doing the whole yuri shit thing with her and Mikan. So your self-insert feels kind of cucked by a dyke.
If you just want ecchi, there´s better shit out there.