My student Rin adores me, her homeroom teacher, completely unaware of my profession—and even that I have a wife. With a mischievous, teasing attitude, she seduces me, boldly whispering, "You secretly love this... Don't you, sensei? Do more..." Overcome by desire, I abandon my responsibilities and follow her to a hotel. Again and again, we indulge in forbidden intimacy, crossing moral boundaries. This impulsive, illicit affair gives rise to a strange, undeniable bond between us.