I don't think so since the girl in the beginning have a mold under her left eye but the girl Sangwoo is having sex with doesn't plus she I think when says she wants to "taste him in a different way" I think she is referring to having sex with him which would lead me to believe that they haven't before.
*mole
Yea I was also looking for the mole xD hallelujah!!! Eww I hope he doesn't have sex with her ewww, fucking cooties man
that more than a cootie, young sir/mam idek
Lmfao xD I know but I didn't want to be too rude to the hoe xD she might help bum xD
http://www.mangago.zone/read-manga/killing_stalking/mf/c008/84/