Yuu Isshiki, is a freshman in college. For the first time in his life, when he learned that Karen, his girlfriend was sleeping with his senior in the circle, Kamokura, he was so shocked, angered, and desperate that he called Kamokura's girlfriend, Touko, and told her with an impulse. Please have sex with me, Touko senpai! " If you get NTR-ed, then the return should be NTR as well! A topical "revenge" romantic comedy that depicts the relationship between the mind and body of four college students, a shocking story now in manga form!