Very bastard seme who treats the uke bad??? like he beat him or so??? Thanks!

http://www.mangago.zone/read-manga/sasayaku_no_wa_sono_yubi/
http://www.mangago.zone/read-manga/yajirushi/

Those are the ones I have read, you can find other mangas under this tag http://www.mangago.zone/tag/abusive+seme/

Blood Bank. It's more like BDSM.

Check out my list http://www.mangago.zone/home/mangalist/108885/ there's a gradation from major assholes to lesser jerks

Royal Servant

To Take and Enemy's Heart