Makoto entered a boarding school at the same time his father remarried. His fun school life came to an end, and it was graduation day. On his way home, when no one was supposed to be there, his stepmother, Aya, came running up to him with a smile... Makoto couldn't hide his joy at being reunited with his stepmother, whom he had fallen in love with at first sight. The two celebrated their graduation as if making up for the time they had been apart. Aya then said, "This is a present for you, Makoto, now an adult," as she gently pressed her skin against his. And he took another step towards adulthood.