here is the plot summary to K-ON!
Adaption of Kakifly's Seinen Yonkoma manga series K-ON! (pronounced “kei on”). The story about four high school girls that try to sustain their school’s popular music club despite being unable to read music or play instruments has been serialized in Manga Time Kirara magazine since 2007.
It's Yui Hirasawa's first year in high school, and she's eagerly searching for a club to join. At the same time, Ritsu Tainaka, a drummer, and her friend Mio Akiyama, a bass player, are desperately trying to save the school's light music club, which is about to be disbanded due to lack of members. They manage to recruit Tsumugi Kotobuki to play the keyboard, meaning they only need one more member to get the club running again. Yui joins, thinking it will be an easy experience for her to play the castanets, the only instrument she knows. However, the other members think their new addition is actually a guitar prodigy...
its a pretty good anime, i like it quite a bit \(^o^)/. all of the moe is just too great.
the ending song Don't say ''lazy'' is really popular since its all over Nico with a lot of differnent covers. this song is just everywhere on Nico and i like it \(^o^)/