Gravitation is a shōnen-ai manga series written by Maki Murakami. It has been adapted into an anime series, directed by Bob Shirohata.
The story follows the attempts of Shuichi Shindou and his band, Bad Luck, to become Japan's next musical sensation. Fitting for the subject, the anime features a large amount of music, a diverse set of characters, plenty of comedy and touches of drama and violence. [wikipedia]