Yuu, who left her parents' home to attend a boarding school, finally graduated after successfully completing her studies. As she was heading home, bidding farewell to her classmates, a woman ran towards her from across the street, waving her hand. To her surprise, it was her stepmother, Rinka, who was supposed to be absent. Yuu couldn't hide her joy at reuniting with her former crush. That night, after getting drunk celebrating their graduation together, Rinka leaned in and asked Yuu, "Would you accept this graduation gift from your stepmother?" with a gentle kiss...
