Atsushi will be graduating soon after entering a boarding school for three years. The fulfilling student life has come to an end, and on the day of the graduation ceremony... On the way home where no one should have come, the woman who runs from the other side with a smile turns out to be her mother-in-law Shoko. Atsushi is delighted to be reunited with the woman of her dreams. A tipsy Shoko, who was celebrating their graduation just the two of them, gently cupped his cheek and kissed him gently, saying, "I'll give you a graduation gift..." And he climbs the stairs of adulthood again.