.•Crime AU•. Ushijima Wakatoshi (Ushiwaka) is a young and talented criminal investigator. He is sent to help look into a series of deals, scams and robberies that all seem to be intertwined. They seem to all be committed by a small gang- practically an immature mafia - called the Miracle Boys. The gang is run by an unidentifiable leader who had dubbed himself "Guess Monster", who teases the investigating team with false leads, planted evidence and seemingly insignificant clues. Until Ushijima Wakatoshi's appearance on the team, the detective force felt weak against the complex web of crime they fell into. But things get good as Mr. Guess Monster grows bolder and more interested in the new investigator, and Ushiwaka gets more and more involved in this new world of deals and tricks.