Yu attends a boarding school. The fun student life ended in a blink of an eye, and on the way home from the graduation ceremony, I saw a woman running up with a smile in the eyes of Yu walking with her friend. It was her mother-in-law, Holy, who was secretly in love with her, who visited with her smile. Yu is excited to celebrate with her loved ones alone. That night, when I drank too much and sent her fluttering to her inn ... Holy, who accepts his feelings, gently kisses her as a "gift from me." And Yu begins to take a step toward her adulthood.