Akira has been studying abroad for three years, trying to shake off his feelings for his stepmother, Mariko. His graduation ceremony is over without incident, and on his way home, feeling lonely, he is approached from the other side of the road by Mariko, his stepmother whom he secretly admired. Akira is delighted to be reunited with her, who runs up to him with a smile on her face, and they spend the graduation celebration alone. And even after he drops her off at the hotel, the conversation gets more and more lively... Mariko smiles gently and says, "This is a graduation gift for you, Akira," and kisses him tenderly.