Having successfully completed his studies at the dormitory, Yuu has reached his graduation ceremony. As he is on his way home, reminiscing about his student life, someone waves at him with a smile... It is his stepmother, Kana, whom he has secretly had feelings for. Yuu is moved by his reunion with her, and as they celebrate their graduation alone, his hidden feelings of love once again begin to simmer... That night, Kana tenderly kisses Yuu, saying, "This is a graduation gift from your stepmother..." And so the boy takes another step towards adulthood.