The mother, who has raised her son alone, is troubled by a growing concern—her son's inability to wean himself from her breasts. No matter the situation, he always brings up her breasts as his second sentence. Her teenage son constantly gropes her large, soft breasts, and to her dismay, she finds herself succumbing to pleasure. One day, while masturbating to relieve her heated body, she is caught by her son. After that incident, he begins groping her breasts from behind whenever she does housework. Though she panics and protests, "No, stop it...!!", he refuses to let go. This ongoing act deeply stirs emotions within her heart.