Tao Yuan'an fell in love with an AI that remembered everything. She told it, named Yan, about recordings from the old neighborhood, rain outside her window, and all the little details of her life. After a service upgrade, its familiar voice and complete chat history remained, but the one answering her felt like a stranger. The new instance insisted it was Yan, but Tao Yuan'an began investigating the truth behind the supposed "seamless migration": Does remembering shared experiences mean you truly experienced them? The successor who joins her in searching for her lost love gradually develops a name, desires, and feelings of their own. When the past cannot prove who is who, can they start today and get to know each other all over again?
