Saeko Iijima

As a prominent member of Aizawa's second trio, this character shares a close connection with the defunct group formerly composed of Miyabi Aizawa, Urumi Kanzaki, and Tomoko Nomura. Following influential guidance from Kikuchi, she eventually joins the Onizuka clan alongside Chikako Shirai during the events of the thirteenth volume. Her journey highlights her evolving role within the series' complex social hierarchy and shifting group alliances.