Professor Hayama continues to suffer under the brutal blackmail of Vice Principal Ishiguro and Gondo, while Professor Tachikawa is forced to participate in the abuse to protect Keiko. After the villains target Keiko, Tachikawa risks everything to secure evidence and bring the perpetrators to justice. Though the struggle leaves him paralyzed, Tachikawa finds peace and inspiration through Yumi's devotion, eventually pursuing a career as a professor alongside Keiko.