Not for Immortality, Just to Keep You Safe for the Rest of Your Life

Ning Xi: You are the first person I am happy with, and you are also the person I want to spend my whole life with. I will do my best to accompany you throughout my life. If you find that I have left in the end, I hope you don't blame me. It's not that I don't love you, but the time has come and I have to fulfill my promise. Xuanhe: I care about the people, and I thought it would always be like this, but when you appeared, I wanted to be selfish for a moment and just wanted to protect you for the rest of my life.