hey guys, i need help from someone really hardcore on 18+ adult mangas.

im searching for a specific manga that i found random on the ghentai galleries...
the only thing i can remember is that has been translated and the story that goes something like this :
the main character has girl that likes him at school, but he is used as sex tool in some after class club (cant remember if it is a student council or something like this)
i remember been a hot blond chick + 2 other girls that force him to have sex, in the end the girl that likes him joins the harem ^^

i remember having something more than 2 or 3 chapters, so i doubt it is a one shot.

pretty hard to find right.... =[
i searched almost 10000 so far and i cant find it anywhere...