Why does everything come down to sex in this manwha ;D

Why, i wonder :D

It is a bit cliche. At least the manga that centred around debt collectors, where the debt collector was the one who wanted to get fucked (rather than it just being rape rape rape assault like this one) put a new spin on things. Can't remember it's title though, I'm sure someone else will.

Found it :)
Goriyou wa keikakutekini
http://www.mangago.zone/read-manga/goriyou_wa_keikakutekini/