It is the truth to send the school life while living in the dormitory. The full three years will end the end of the year and finally greet the graduation ceremony. In her parents' home, Mariko, a yearning woman, remarried to her father, so she never returned home. However, on the way back, Mariko who became a mother-in-law visited the graduation celebration quickly. That night, she said "gift to Makoto who became an adult" gently. Guided by the yearning mother-in-law, he ascended the stairs to an adult again.