Yu, who had been living alone after entering a dormitory-style school. The fun student life also came to an end, and finally graduation arrived. On the way home, filled with anticipation and anxiety for a new start, someone waving their hand and running towards him with a smile from afar was his stepmother, Shiori. Since the first time they met, he couldn't hide his joy from the blessing of a woman he had always admired. Then, while taking care of Yui who got drunk at their private graduation celebration, she gently kissed him saying 'A present for grown-up Yuu-kun'—.
