Rin Suzumiya was overjoyed when she received a letter of acceptance from her dream high school. But her excitement turned into dismay when she realized that she was assigned the same class as her childhood bully, Yukichi Sakamoto. Despite the three-year gap, Yukichi remained a bully, making Rin feel trapped. Trying to ease the tension between them, she mindlessly signed a piece of paper that he handed to her, not knowing that it was a marriage registration form. Her world crumbled when Yukichi refused to give her the form, demanding that Rin stop avoiding him for the next three years. With no way out, Rin was left to wonder how she would survive high school with her tyrannical tormentor.
