Manga by Imai Yuu.
Summary: Miyahara Chiko is a mysterious girl who never seems to talk to anyone and always wears a pair of headphones and a scarf. But what is she hiding behind that silent facade? (Source: MU)
Genres: Comedy, Harem, Romance, School Life, Sci-Fi, Seinen
Chapter 1 – 13 was released by Japanzai