Juukinzoku Kanojo

The Heavy Metal Music Group at the high school consists of just Amanokawa Rinko and the main character, a teenage boy madly in love with her. The club is intended for people who enjoy the music genre to discuss their passion for heavy metal. However, there's only one kind of passion going on in this club house located in the outskirts of campus, and it is definitely rockin.'

(Source: MangaHelpers)