Gyakuten Saiban: Sono "Shinjitsu", Igi Ari!

Synopsis

Phoenix recalls the incident that first brought him, Edgeworth, and Larry together in elementary school, beginning when Larry picks up lunch money unknowingly dropped by Edgeworth. Phoenix is believed to have stolen the money and put on a mock trial, where Edgeworth and Larry defend against the class's accusations. Later that day, Edgeworth helps Phoenix and Larry find the owner of an abandoned dog that Larry had come across. After the owner rejects the dog, Edgeworth decides to take it home with him; he also takes an interest in Phoenix and Larry's favorite television show, becoming friends with them. However, following the death of his father, Edgeworth is taken in by von Karma, leaving his new friends behind. Going back for a key chain that von Karma had thrown away, Edgeworth finds Phoenix and Larry waiting for him, and they assure him that they will always be friends. Back in the present, Edgeworth disembarks to places unknown, leaving behind a note that reads, "Prosecutor Edgeworth chooses death."

(Source: Wikipedia)