Yu left his parents and enrolled in a boarding school. He successfully completed his studies, and finally it was graduation day. As he walked home, bidding farewell to his classmates with reluctance, he saw a woman waving and running towards him from the other side of the road... It was Rinka, his stepmother who was supposed to be unable to come. Yu couldn't hide his joy at reuniting with his former love. That night, during their private graduation celebration, Yu drank too much and as he sent Rinka home, she said, "Will you accept this graduation gift from your mother?" and she gently kissed him...
