The FL I believe was either a virgin or a loser girl and she gets approached by this black haired guy to be in a secret sex society. She had to bang a bunch of guys before she could get in. The ones I remember are her older neighbor(landlord?) who got cheated on and a random guy she met on the train. I remember so much of the plot just not the name please help
I'm giving you 10 chapters to make up your mind and go get her back cuz goddamn this is dragging