A gag story about daily life involving various professional baseball players and related people, including Kiyohara from the Seibu Lions. Although it is modeled on real professional baseball at the time of its serialization, players' names are written in katakana. Team and stadium names are slightly modified.

As the title announces, the main character is Kiyohara Kazuhiro, a character inspired by Kazuhiro Kiyohara. This is a gag manga featuring him and various other professional and official baseball players. In addition to the gags, there is a lot of slightly manic pro-baseball knowledge.