Seigi Akoku

He seems to be steadfast and disciplinary, going right into the action when Yuko attacked the school to buy time for more Devil Hunters to show up. He is also shown being rescued alongside other members of the Chainsaw Man Church during Asa's attempt to rescue Chainsaw Man. Whether he joined of his own free will or due to being part of the Devil Hunter Club is unknown.

left|thumb|Seigi as he appears before losing his right eye to Yuko. Seigi is a heavyset teenager and is taller than average. He wears the typical male uniform of a high school student and a Inagaki cap. The Inagaki cap has a rounded shape with a stiff brim and a button on the top. It is made of black cloth, with a small, usually specific emblem or badge on the front. This one in specific having the symbol 'デ' on it as an emblem - assumingly, it is Katakana for "DE" which could be short for "Devil Hunter." When fighting Yuko, he wore spiked brass knuckles. After his battle, he lost an eye, which is bandaged and later replaced with a black eyepatch.

Skillset
* Hand-to-Hand Combat: Seigi excels in unarmed combat. He has displayed impressive skills, capable of blocking an attack from a transformed Yuko with quick reflexes, then landing multiple hits on her in succession.