there are a lot of yaoi mangas with sadistic seme and masochistic uke. but I can hardly remember manga with sadistic uke and masochistis seme (except for one couple in Hoshi no Yataka). does anybody know such manga?

Hetalia dj - Bathroom Rhapsody
Kibishiku Aishite

http://www.mangaupdates.com/series.html?category=Dominant+Uke

Hmm, Violence na Kimi ga Suki fits this, I believe.