Shūichirō Kiriyama works at the Limitation Task Force, the place where the cases which have reached the statute of limitations are destroyed. Getting bored of his job, he decides to find a hobby, because it seems important to him to have a hobby. So he decides to puzzle out the unsolved cases on his free time, helped by his coworker Mikazuki, who seems to have a crush on him.

Satoshi Miki
Sion Sono
Keralino Sandorovich
Ryo Iwamatsu
Reiko Yoshida
Renpei Tsukamoto
Joe Odagiri
Akiko Ohku
Yuichi Fukuda