Seji

Seji (セイジ) is a second year student at Kushima High School.

First and Second Years Fight
Seji is introduced alongside Kiryuu Youichirou and Morita Isami, when Kiryuu tells Chikura Tooru they need to move or they'll be late for class. When Tooru he declares he'll take out Shiiba Gaku. Kirio mentions about them having some fun beating some first years.

Sat underneath the school yard shelter with Tooru, Isami and Kirio, while polishing his shoes. They briefly discuss Shiiba Gaku. When Aura questions who's the strongest out of Marumo Taiji, Urabe Osamu and Shiro, Seji mentions they'll spilt them. Aura declares they'll do it like usual, to which Seji agrees. When the three settle it with a game of rock paper scissors. Tooru mentions Seji will get Marumo Taiji.