Due to her husband's frequent night shifts, Michiko relieved her daily stress through masturbation. Her son had secretly witnessed her pleasuring herself on multiple occasions. One day, he suddenly reached out to her, asking, "Mom, are you lonely?" In that instant, Michiko trembled with emotions she had long kept hidden. Shaken by her son's warmth, her heart races with the possibility of a new, forbidden relationship. A mysterious bond between mother and son unfolds within the quiet moments of everyday life.