Sakunosuke Oda

Sakunosuke Oda is a member of the Port Mafia who shows up in the spin off novel Dazai and the Dark Era.

His ability name is called Flawless.

Trivia

 * In real life, he is often grouped together along with Osamu Dazai and Ango Sakaguchi as the Buraiha or Decadent School.
 * And on the series, this is often alluded, because the three used to meet in a certain bar, as seen in Dazai and the Dark Era, and illustrated on the calendar.