Kanon, who requested tutoring from her uncle—a graduate of a prestigious university—begins to show unexpected changes in behavior. She removes her underwear and confidently attends lessons naked, leaving her uncle flustered and unable to hide his confusion. With a mischievous smile, she teases him playfully, pretending it's accidental as she touches his underwear and slowly stimulates his sensitive areas. Her actions, seemingly trained and deliberately seductive, exude an alluring charm that deeply unsettles her uncle. Their relationship as tutor and student quickly transcends boundaries, giving rise to new, forbidden emotions.