Revenge is coming for Shizuka (Hirose Alice)! "I will never forgive Reimi Shizuka" - Aika (Shida Mirai) blames Shizuka for her sister's death and grows increasingly resentful. Meanwhile, Moriguchi (Ito Atsushi), whose position as the next chairman of the school board is in jeopardy, tries to drag the eyesore Kyoko (Kimura Yoshino) down from the principal's chair... Meanwhile, a major incident that threatens Shizuka's teaching career breaks out! Aika appears in Shizuka's classroom and declares in front of the students, "Reimi Shizuka is... a murderer." A direct confrontation between Shizuka and Aika begins! How can she make amends!? Shizuka faces herself and finds her answer...!