Gyakuten Kenji is the second game in the Ace Attorney Investigations spin-off series, centered on prosecutor Miles Edgeworth as he investigates crime scenes and uncovers contradictions through logic-based deduction. The game expands on the courtroom mystery formula of the Ace Attorney franchise by focusing on field investigation, witness confrontation, and narrative-driven cases. It was originally released in Japan and is known for its sharper detective emphasis compared with the mainline courtroom entries.