Ryūnosuke Naruhodō (成歩堂 龍ノ介) is a character from the Ace Attorney series of visual novel legal thriller games. He is the main protagonist of the side game Dai Gyakuten Saiban: Naruhodo Ryunosuke no Boken and an ancestor to the series' primary protagonist Ryūichi Naruhodō (Phoenix Wright).
Ryūnosuke is a second-year university student who gets caught up in an incident and finds himself on the defense's bench three days later. He has a strong sense of justice and is prone to putting himself in dangerous situations. He is aided in his cases by Susato Mikotoba, a female judicial assistant.