At the same time as his father's remarriage, he went to a boarding school. The fun of my student life is over, and it is the day of the graduation ceremony. On the way home, when no one was supposed to come, my mother-in-law, Aya, ran up to me with a smile. Makoto can't hide her joy at reuniting with her mother-in-law, who was love at first sight. The two celebrate graduation to make up for the time they spent apart. And "It's a gift for Makoto who has grown up," Aya gently layered her skin. And he climbed the stairs to adulthood one more time.