The stepmother ended up marrying the father of a classmate after a surprise pregnancy. Until yesterday, she had been nothing more than the boy's mother figure, but he gradually finds himself drawn to her warmth and kindness, beginning to see her not just as a mother, but as a woman. Her tenderness and sweetness become irreplaceable to him, and he starts harboring these special feelings in his heart. His stepmother's sweet breast milk is truly a treasure for him, its warmth embracing his soul.