Sota, who lives with his mother, has his aunt Hono return to their hometown with her son after losing her husband. Sota, who is just beginning to develop consciousness, sees Hono for the first time in a long while and immediately feels stirred by impure emotions. Taking advantage of his position as her nephew, he touches Hono's body and acts like a spoiled child. This "spoiling" escalates, with him reaching out to touch her ample breasts and buttocks. Unintentionally, Hono's body also starts to grow hot from the lack of intimacy, and the two indulge in forbidden affairs. Sota's repeated advances make Hono increasingly obsessed, to the point where she herself starts to move her hips...
