Decades ago, Taichi, my daughter's classmate and our neighbor, confessed that he wanted to marry me when he grew up. I assumed it was only a boy's admiration for an older woman and gently turned him down. Years later, I opened the door to welcome my daughter and her fiancé—and found a familiar young man beside her. Her fiancé was Taichi. That night, nostalgia prompted me to ask whether he remembered his old confession. He replied, “I still love you,” and suddenly kissed me...