I read it once 4 years ago at pururin but after that
website went to the shit and I regreted not to download it...
this doujinshi has 3 episodes, telling the story of beauty girl that is the counsil president of her school and she wants to please all wishes of each stundent then she is raped in every way you could imagine, It's the most brutal hentai I ever read
Is it this one?
Hayate no Gotoku - Kaicho Onegai Shimasu 2