Kesagiri Man wears a suit covered in fur, which covers his whole body except his fingers.
Kesagiri Man appears quiet and composed. He consoles Tsuyu Asui and Ochaco Uraraka when they discuss adjusting to activities outside of school. Kesagiri Man speaks in a deep voice and commands the yakuza thugs to stop resisting after detaining them.
Kesagiri Man attends a meeting at Sir Nighteye's office to discuss the Eight Bullets. He asks what happened to make the office start investigating the Yakuza two weeks prior, and Bubble Girl explains about the incident with Team Reservoir Dogs. When Centipeder mentions that the Yakuza seem to have teamed up with the League of Villains, Gran Torino realizes why Sir Nighteye asked for him and Tsukauchi, which prompts Kesagiri Man to ask where Tsukauchi is. Kesagiri Man is shocked when Fat Gum reveals that the Yakuza have a drug that erases Quirks. Reading over the report of criminal activity, Kesagiri Man acknowledges that the rise in crime appears connected to the Eight Precepts but questions if it is all circumstantial. Sir Nighteye requests that all the heroes investigate their areas for leads before dismissing everyone.
A few days later, Sir Nighteye holds another meeting and reveals the location of the Yakuza's base. The next morning, the heroes, their interns, and the Police Force gather outside the Eight Precepts' base and are given handouts detailing the base's layout and the known abilities of the Yakuza.
Before the heroes can enter, one of the Eight Bullets attacks. While Ryukyu and her team remain to handle him, the others continue on. In the courtyard, one of the Yakuza launches the leaves of a tree at them but Kesagiri Man blocks the projectiles and takes out the man. Inside the base, Kesagiri Man and a few of the other heroes remain behind to deal with the Yakuza.
- Kesagiri is a Japanese term for "slashing a sword diagonally from the shoulder."
- His favorite food is fried chicken.
- He shares his birthday with Naomasa Tsukauchi, Chiyo Shuzenji, and Tomura Shigaraki.
- Kesagiri Man's English voice actor, Jerry Jewell, also voices Nezu.
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