For me I have 2 favs Kaede-sama and Mikado-sama(from the Warui series not that he bullies him all the time) I just put -sama cause I don't want to say -san... Well anyways these 2 are quite similar but there are differences...(side comment: also the nekos(uke if u didn't know) r both kinda [I don't know how to describe] like their minds are kinda simplistic though Rintarou-kun is a bit more clumsy and smarter than the other since that Rin-kun was tutored) well anyways I love childish seems...
I've read a lot of stories with a bully seme, but Kaede is the best. There's something about how much his love for Rintarou (he even bullies him in a loving manner) (≧∀≦)that is so sweet.