S1E4 — Gakuen de Jikan yo Tomare — Episode 4

The final episode brings the protagonist's revenge scheme to its climax as he continues wielding his supernatural time-freezing device within the prestigious academy. Driven by deep resentment toward the aristocrat father who abandoned him, he presses his campaign against his half-sisters in increasingly dire circumstances. This concluding installment of the dark supernatural OVA sees the full weight of his actions unfold inside the elite school walls.