Franchise context: The write-up below is from the parent franchise article (anime, book series, or IP) rather than the card game itself. A dedicated CCG profile has not been written yet.
Sket Dance is a Japanese manga series written and illustrated by Kenta Shinohara. The manga follows the adventures of the Sket-dan, a high school club whose goal it is to help the students and teachers of Kaimei High School with their problems, as they do whatever it takes to help make their campus a better place. The story is mainly told in the perspective of the Sket-dan's three members: Bossun, the leader of the group; Himeko, the "muscle" and the only female in the group; and Switch, the otaku and the "brains" of the group. It was serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump from July 2007 to July 2013, with its chapters collected in 32 tankōbon volumes.
Source: en.wikipedia.org/wiki/Sket_Dance