Yu attends a boarding school. The fun student life came to an end in the blink of an eye, and on the way home from the graduation ceremony, as Yu was walking with his girlfriend, he saw a woman running up to him with a smile on his face... The person who came to see her with a smile was her mother-in-law, Hijiri, who was secretly in love with her. Yu is excited to celebrate alone with his girlfriend. That night, when I drove my girlfriend back to her hotel, she was feeling dizzy after drinking too much. she accepts his feelings