Koichi Takamatsu

One day an idol is bitten by a zombie and before she is taken into custody, she runs away. She only has 72 hours left until she becomes one, so she tries to find the zombie serum, but high school girl zombie hunter and zombies attack her. Will she make it to the destination within the time limit?

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.