Yu's student life of living alone in a dormitory is over, and she is about to embark on a new journey. And on the day of the graduation ceremony, it was my mother-in-law, Haruka, who was secretly in love with me, who ran in from across the road with a smile. - The two of them spend a graduation celebration together, but the defenseless Haruka gets drunk because she is so happy with his growth. Yu desperately tries to get rid of his evil heart and sends him to the hotel. However, Haruka, who was aware of his feelings, gently kissed him, saying, "A gift for Yu-kun who has grown up."