He was born on the month of hail, chosen to be the walker of shadow. He hailed from an organization, which was known for killing and Assassination. When his organization turned against him, he killed every single one of them to become a legend. When he was caught in a warp, while he was sent to earth with a broken little body of his. Where with the blessing or a curse was adopted by a kind family. As he tried to regain his old power from the beginning, he received words from the world as [Detective System] He who hailed as an assassin from an unknown world, with little fragment memories. Work his way to the top, becoming the strongest Assassin Detective of the new Era. Where Earth has developed to the era of interstellar, he will fight his way to the top. Space, Love Triangle, and warped technology. Will advance his primitive method of shinobi, into a new entity called Shadow Detective of this time...