Kanojo ga Senpai ni Netorareta node, Senpai no Kanojo wo Netorimasu

Yuu Isshiki, a first-year college student, shares a relationship with his charming girlfriend, Karen Mitsumoto. His world shatters when he discovers that Karen has been unfaithful, having an affair with her senior, Tetsuya Kamokura. Consumed by anger, heartbreak, and desperation, Yuu decides to retaliate by reaching out to the one person who shares his pain: Kamokura’s girlfriend, Touko Sakurajima, widely regarded as the most beautiful girl at their institute. In a moment of raw vulnerability, he approaches her with a desperate plea, asking her to have an affair with him in return. However, Touko refuses to settle for such a simple act of revenge. She declares that she will not allow herself to be made a fool, insisting that true retribution requires pushing her betrayer into the absolute depths of despair. Instead of a fleeting tryst, she devises a far more calculated and devastating plan. Touko intends to make Kamokura genuinely fall in love with her, drawing him completely into her emotional grasp. Once his feelings are absolute and his guard is entirely down, she plans to shatter him utterly—mirroring the very betrayal they both suffered by spending the night with another man.