JUR-570 After the graduation ceremony... A gift from your stepmother to you as an adult.

Having left his parents' home and with his dormitory school life coming to an end, Yuu is nearing graduation. He had left home intending to sever his feelings for his stepmother Yuki, but upon seeing her wave and run towards him on the way back from the graduation ceremony, his hidden emotions quietly reignited. That night, after a graduation celebration with just the two of them, Yu sent Yuki home drunk. Despite trying to suppress his raging desires, Yuki gently kissed him, saying, "This is an adult present for you, Yu"...