Kokuhaku...... 4

The truth behind Hinano's torment finally surfaces: cool, perfect honor student Kasuga Yua was the one who anonymously handed the incriminating video to the spineless teacher Souta, engineering the whole blackmail scheme to keep the cheeky gal all to herself.

As the maternal Yamashina Rio confronts Yua over her own long-buried feelings for Hinano, the two are pulled into each other, while Souta corners Hinano one last time. The girls, together with the chairman, finally close in to put a stop to it, though Yua coolly admits she let the humiliation play out simply because she enjoyed watching.