Following ლ(´ڡ`ლ)....
Additional info: Seme is raven-haired and uke is blonde. Gosh I wish I could read it again.
This isn't the one your looking for but its similar, but mire romantic and not as sex slavery... sorry
http://i6.mangapicgallery.com/r/coverlink/rROHYUm8aBnzo-L7jmKxeVqRBXTU-jToX6qEI9cAiAUnbyaAuuXvWEYjV4X69U4.jpg
Sorry wrong link
http://www.mangago.zone/read-manga/oshiete_ookami_san/
Blackfaced seme? What the fuck what's up with that ravist request?
OHH BLANK FACED.. I'M SORRY I OVERLOOKED IT
http://www.mangago.zone/read-manga/junjou_bitch/
Could it be this one?
There's this BL with promiscuous uke that likes to seduce the blank-faced, indifferent/cold seme. There's a scene where the uke trying to bed the seme, he seduced him and rubbed the seme's (clothed) dick whispering how he wants to get fucked to oblivion then the seme "snapped" and then skull-fucked him and then fucked him hard. The seme kept fucking him while telling the uke how much of a slut the uke was, desperate for his cock and was starving for it; basically the seme dirty talk his way throughout the smutty scene. What made this scene great was that, the uke was utterly shameless and also dirty talk back how he was really hungry for the seme's rod and asked the seme to use and give it harder to him like the sex-slave he was.