One Life, One Reincarnation summary:

For the most part, the world is a superficial place. We see only the surface, and not what’s underneath.* What would you do if there existed a person who was blessed with the memories of their past life and continued to love you deeply in this life? He, Zhou Shen Chen, was granted such an opportunity. She, Shi Yi, who carries the burdens of their memories by herself in the present, has only ever wished for one thing in her lifetime: to find a story that truly belonged only to them in both the past and present. For richer or for poorer, in sickness and in health, no matter what’s on the surface, I will always return to you.