The Detective is Already Dead

I, an ordinary highschool student, Kimihiko Kimizuka,  I was embroiled completely flawlessly into a plane hijacking,  Where I became the assistant to the angelically beautiful detective girl I met.  In three years, the great detective and her assistant unfolded a dazzling adventure dram--  Before long, we were seperated by death.  This takes place a year after that.  The only survivor, me, and the detective's dying wish--  Their unfinished story.