Oda Sakunosuke

Sakunosuke Oda (織田 作之助, Oda Sakunosuke?) was a member of the Port Mafia.[1] He possessed the ability "Perfection".

Appearance
Sakunosuke Oda is a tall man with dark brown eyes and short, reddish-orange hair[3] (darker, closer to brown, in the anime), styled with a slight parting that leaves a small portion of his forehead visible. He also has a light stubble similar to Mori Ogai's.

Personality
Oda was a man Dazai described as "kind," despite working for the Port Mafia. He had a calm demeanor, making Sakunosuke one of the few in the Mafia who rarely killed. However, when enraged, he demonstrated astonishing fighting skills, something Dazai repeatedly warned Akutagawa about. Osamu called Oda "a man with no ulterior motives." Oda speaks his mind. But sometimes he mistakes jokes for seriousness. For example, he once responded in detail to Dazai's playful interrogations about how and when Sakunosuke sustained his various injuries.

Despite this, Oda was a very perceptive man. This side of him allowed him to come very close to understanding the inner world of Dazai, whom Sakunosuke called "his dear friend, tired of the world and simply waiting to die." It was his understanding of Osamu's loneliness, as well as his regret at not being able to help his friend, that prompted him to say...

Be on the side that saves people. If both sides are the same, choose that side to become a good person. Save the weak, protect orphans. You may not see much difference between good and evil, but saving others is simply wonderful!
Oda to Sakunosuke Dazai.[1]

...it was these words that became the trigger for Osamu to leave the Port Mafia in favor of searching for a brighter path for himself...something that Oda had once wanted to do for him.

Capabilities
Impeccability (天衣無縫, Ten'imuhō?)—This ability allows Sakunosuke Oda to foresee the future for five to six seconds. It's an extremely powerful ability, rendering most surprise attacks useless. However, it has a limitation: if the time between the "trap triggering" and Oda realizing he's in danger exceeds the six-second limit, Sakunosuke will be unable to use his ability to escape or trigger a counter-trap.

The future Oda sees with this ability is also limited by his current decision. If he decides to change his actions based on what he sees, he will see a different future and may uncover a different danger he couldn't see before.