Since her husband left six months ago, Kana had been trying to stay positive each day. However, Yosuke couldn't help but notice the lonely look in her eyes, and his heart ached for her. He agonized over how he could comfort her, struggling with his feelings day after day. One day, Yosuke accidentally witnessed Kana masturbating alone. Seeing her in that vulnerable state tightened his chest, and he resolved to support her in his own way. At first, Kana was confused, but upon realizing her son's genuine concern, she gradually opened her heart and accepted his affection.