One year after losing her husband, Hitomi has barely spoken. Worried about his mother, her son Taichi accidentally discovers her masturbating in the bathroom. Realizing she must be acting out of loneliness, Taichi reaches for her sleeping body that night, but Hitomi strongly rejects him. Later, when they bathe together, Taichi suddenly gets an erection. Seeing this, Hitomi reaches toward his crotch... A story depicting the emotional turmoil between mother and son, and the beginning of a new relationship.