Toshifumi Muramatsu

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.

Hideo Suzuki is a 35-year-old mangaka assistant, whose life seem to be stuck around his exhausting but low-paying job, unfulfilled dreams, strange hallucinations and unsatisfying relationships. He sees himself as a supporting character in his own life, has low self-esteem, resulting in frustration. One day, the world as Hideo knows it is shattered by the presence of a disease that turns people into homicidal maniacs, whose first instinct is to attack and devour the nearest human.