Synopsis: Moko and unusual Murderers

22-year-old Haijima Hitsugi has recently joined the unconventional homicide team, where he is teamed up with Utagata Moko to tackle baffling mysteries. Despite being the same age, Moko's appearance, clothing, and demeanor give the impression of a small girl, and she requires supervision similar to a child. However, her abilities in solving complex murder cases are exceptional.