S&M

Hard Core Heart
Yume No You Na Hanashi

if you count rape play in (it's consensual)
http://www.mangago.me/read-manga/test_play/
http://www.mangago.me/read-manga/henai/
http://www.mangago.me/read-manga/henai_maotoko_hen/

http://www.mangago.me/read-manga/fuuzokugurui_desu_ga_toshishita_danshi_ni_kokuraremashita/ not ch4&5
http://www.mangago.me/read-manga/yoru_wa_tomodachi/

http://www.mangago.me/read-manga/love_in_motion/ it's S&Mish xD
http://www.mangago.me/read-manga/yume_no_you_na_hanashi/ ch 1-4, 7, 8, 11.5 (i don't remember, but i think they just did it when they were dunk, no rape)

thanks!!