The Detective Is Already Dead, Vol. 1 (manga)

The only surivor, me, and the detective's dying wish: their unfinishedstory. I, an ordinary highschool student, Kimihiko Kimizuka, I wasembroiled completely flawlessly into a plane hijacking, Where I became theassistant to the angelically beautiful detective girl I met. In three years,the great detective and her assistant unfolded a dazzlingadventure dram-- Before long, we were seperated by death. This takesplace a year after that. The only survivor, me, and the detective's dyingwish--