Synopsis: The Detective is Already Dead

Kimihiko Kimizuka is the protagonist of Tantei wa Mou, Shindeiru. He became the assistant of a detective named Siesta four years ago while they were on a hijacked airplane. Siesta was an enigmatic figure, and the two became partners on thrilling adventures that took them around the world as they fought against a covert organization. However, Siesta's death separated them, and Kimihiko returned to being a dull high school student in the present day. Despite Siesta's demise, Kimihiko finds that his life is anything but uneventful.