Okitegami Kyouko no Urabyoushi

A detective with a poor memory becomes a suspect in a robbery and murder case after being discovered sleeping at the crime scene with a bloodstained weapon. Unable to recall the events, she proposes to solve the case from within her cell. Her offer draws the attention of a strict police officer known for false accusations. Torn between his professional pride and the need for answers, he seeks assistance from an expert on the forgetful detective.