Senpai to Issho

Chihiro, who entered in high school and tried the life in dormitory at the same time, encountered by chance her sempai, Hodaka and already became close to him. And then, that "prince of pheromon" used his attraction power to manipulate her. She knows he's just playing with her but she can't stop liking him!

(Source: Chibi Manga)

Included one-shot: Kimi to Kiss Shitai.