I, an ordinary high school student, Kimizuka Kimihiko, who easily gets involved in things, was appointed to take care of mysterious attache cases by mysterious men in black suits. After meeting a beautiful angel-like detective girl, named Siesta in a hijacked plane, I became her assistant.And from thereâ[You deal with the beehive, and Iâll restrain the enemy.][Donât make plans that make me the victim.]We had those kinds of foolish conversations, all while being completely broke every day and fought against <The enemies of the world>. Even when there were hurricanes, the weather-beaten duo sleep past it. Sometimes when we saved money at a casino, we would jump around on the beds at a resort hotel, only to be broke again the next day. We would walk through deserts, traverse through jungles, conquer mountains, cross oceansâ The great detective and her assistant would go through these dazzling adventuresâUntil she died.And this story starts from 1 year after that incident.Iâm the only one whoâs left, but I carry on her remained wishes.This story is far from over..