During Kuroko "Tetsumi" childhood she met a blond boy named Kise Ryota getting hurt by some older kids so she went to help him. But what she didn't know is that this was a sign of something more than friendship! Wen Kise told her he was moving away she was sad crying for the first time he has met her and does one thing and promises her that he will come back and he would marry her. Kise kisses her on the "lips", after he leaves leaving Tetsumi alone and years later they meet but how much have they both changed in the years?