Before graduation, Yuu, who had lived in a dormitory and experienced living alone, still carried memories of his school days close to his heart, feeling both anxiety and excitement for the new chapter ahead. On his way home, Shiori, his stepmother and emotional anchor, came running toward him, waving from afar. Ever since they first met, she had been someone who deeply cared for him, and seeing her smile made Yuu feel both flustered and joyful. To celebrate his graduation, the two spent intimate time together alone, and as Shiori grew tipsy, she gently kissed him, stirring emotions deep within Yuu.