The March issue of Kadokawa 's Comic Alive anime adaptation of the light novel " The Detective Is Already Dead ".
Synopsis
The story follows Kimihiko Kimitsuka, a young man who four years ago became the assistant of a mysterious detective known as "Siesta" during a plane hijacking. Together, Kimihiko and Siesta embarked on mind-boggling adventures and explored the world while battling a secret organization, but all of that ended when Siesta died.
The Detective Is Already Dead light novel was released in 2009.