Kira Kira is an eroge, or hentai game. The story revolves around Shikanosuke, the story's male protagonist, and his female partners, Kirari, Sarina and Chie. All four attend the Christian high school Ohbi Gakuen, and are the only four members of the Daini Bungeibu (Second Literary Club). Their club was about to be disbanded when the group decides to form a rock band called the Daini Bungeibu Bando, or d2b, for short. In order to make it an all girl band, Shikanosuke dresses in drag and goes by the name of Shikako. After the quartet's popular school festival performance was broadcast on the internet, the group goes on to perform throughout Japan. Sarina is the group's lead guitarist. Because she comes from a wealthy family, Sarina is graceful and ladylike in her actions.

Katakura also drew characters from "Kira Kira" the year before, however, when this shikishi is placed next to his 2009 work, there's quite a bit of improvement. Katakura was, by far, my favorite of the artists at the MangaGamer booth in 2010. He spent a lot of time working on each sketch, especially on the colored items.

Here's a clip from the "Kira Kira Rock" eroge.