Big-breasted mother Yoshie Mizuno lives in a single-parent household and struggles with her relationship with her beloved son. She is troubled by her son's inability to detach from her breasts, gradually becoming aware that he continues to touch and grope her large, voluptuous breasts in daily life. This moment becomes a turning point—her son begins groping her breasts from behind, even while she's doing housework. "No, stop it...!!" she protests in flustered resistance, but he ignores her pleas and continues squeezing more intensely. This story captures the strange, emerging bond between mother and son, entwined with adult desires, moral responsibility, and inner conflict.