The student life of living alone in a dormitory after leaving home is coming to an end for Yuu, who is nearing graduation. And on the way back from the graduation ceremony, the hidden feelings for his stepmother Marina, who runs towards him with a smile, flare up again. That night, Marinay, who had drunk too much at the graduation celebration with just the two of them, was sent to a hotel… Suppressing her feelings that were about to run wild, she said to him as he tried to leave the room, “This is my graduation gift for you, please accept it…” and gently kissed him. And thus, the boy began to climb the stairs to adulthood.
