Yuta entered a boarding school to try and forget his feelings for Minami, his father's new wife. As his fruitful school life finally came to an end, Minami came running to him with a smile on his graduation day. Upon their reunion, the feelings he had locked deep in his heart were revived... That night, while spending time alone together to celebrate his graduation, Minami kissed him, gently intertwining her tongue, and said, "This is my graduation gift to you..." And so, the boy began to climb the stairs to adulthood, one step at a time.
