Sakunosuke Oda

Height: 185 cm (6'1)
Ability: Flawless

Was a member of the Port Mafia. Oda was a man described as kind, despite working for the mafia, by Dazai. He had an incredibly perceptive side to him that allowed him to come the closest to understanding Dazai, whom he referred to as "his dear friend, who had grown tired of the world and is simply waiting to die."