London. The Miller family’s old residence. Joseph asked Kaia many funny stories about the twins' childhood, and his laughter was often triggered by Kaia's narration. Time flew by, second by second, and over an hour passed in the blink of an eye. Joseph, who had been digging for details and asking Kaia about when the twins started sitting, crawling, and getting their first tooth, suddenly changed the subject. He looked at Ryan and Kaia and said, "You two should go register." "Huh? Mr. Miller, what are you saying?" Kaia didn't understand. "Register? Register for what?" "What do you mean, 'register for what'?" Joseph said matter-of-factly. "Of course, register for marriage!" "Uh... Register for marriage?" Kaia was taken aback. She smiled and said, "Mr. Miller, you must be joking." She

