The Adventure of the Great Departure

Episode 1: The Adventure of the Great Departureis the first episode of the game Dai Gyakuten Saiban: Naruhodō Ryūnosuke no Bōken and follows Ryūnosuke Naruhodō's first appearance in court. In his first trial, Ryūnosuke is tried for the murder of a British professor, Doctor John H. Watson, despite having no knowledge of law. Ryūnosuke Naruhodō, Kazuma Asōgi, Taketsuchi Auchi, Satoru Hosonaga, Yūjin Mikotoba, Susato Mikotoba, Sanmon Sonohigurashi, Taizou Uzukumaru, and Jezail Brett all make their débuts in this episode.

Out of all tutorial episodes in the Ace Attorney games, The Adventure of the Great Departure is the longest of all the games, consisting of three trial segments.