a guy who sleeps around falls in love with his coworker, and resolves to never sleep with him. and yet... they somehow end up sleeping together?!
a bubbly host x newcomer gentleman host who teases him
one gay, one straight neighbour; both have their relationships come to an end, and end up becoming closer (gay -- onodera -- fell in love with his neighbour at first sight, but had a tsundere streak that made it hard to talk with him)
Hitorijime no Jouken