Makoto's student life at a boarding school was about to come to an end. And at the graduation ceremony, it was my mother-in-law, Yuka, who ran from across the road with a smile on her face. Makoto, who had a secret feeling for her, was excited to celebrate with just the two of them. Yuka takes the plunge and refuses him once for confessing, but she is struck by his serious feelings and accepts, "It's a graduation celebration ...". And Makoto climbed the stairs to adulthood again.