I'm looking for a shoujo manga that I read a while ago.

The heroine has a strange dream, the next morning she wakes up and has suddenly really good sense of smell because of an alien in her head. She can smell sexual tension (or just sex on the people around her). She finds other students, who have also an alien in their heads and have good sense of hearing, touch or taste.

I think it has around 17 chapters or so.

Thanks.

Para Paru, I think.

Yeah, that's it. Thank you