Since her encounter with Kurozuma, Mii hasn't been coming to work. Curious, the girls visit her dorm, where they meet Mii's roommate, Aomi Yanagisako. Aomi reveals that Mii was once a member of Big Spider, which was a more friendlier group back then, and despite being an esper, she was allowed to stay by Kurozuma, who she fell in love with. When Mikoto receives word that the AntiSkill will be leading a surprise crackdown against the Skill-Out gangs the next day, she confronts Mii on why she won't leave the past behind. Mii explains that she left the gang when Kurozuma supposedly died during a fire, later becoming a member of Judgment. Kurozuma appears and explains to Mii how he was hospitalized after the fire, while she tries to convince him not to end Big Spider all by himself. Later, Mikoto has an epiphany and finally understands Mii's reasons. As the crackdown begins, Mikoto, Kuroko and Mii help Kurozuma fight the Big Spiders and destroy their weapons, including Capacity Down. With only him remaining, Hebitani threatens to light a bomb strapped on his chest, but is knocked out by Kurozuma. As the Big Spiders are arrested by AntiSkill, Kurozuma asks Mii to arrest him as well, and they reconcile.