It's a story about the relation between Nagisa and Kayano after their graduation. In this story Koro Sensei survives and the identity of the students remain a secret, or so do they think. A sudden blackmail comes up putting everything they had in threat, how will they fight against it? How will this influence Nagisa and Kayanos relationship?

While Nagisa teaches Class 3-5 of Paradise High, a nefarious intrigue puts the school in peril. Rated M for profanity.