You want sex??? You came to the right place. Multiple couples sharing a same universe.
Couple 1 = possessive seme and airhead uke
Couple 2 = hornball seme and Prince type uke
Couple 3 = sadist seme masochist uke ((oof wanted them to get together romantically but they're having sex for work which does not rub me the right waayyy)
Toshishita Kareshi no Renai Kanriheki