If life is really just like the first time we meet! She is just her, and he is just him. How wonderful it would be to be siblings of different origins in the same family. When they first met, Xiao Xingyu hated Liu Xinran, the girl who was one year older than him and threatened to take good care of him. After living together for more than ten years, his heart was in chaos. Seeing her holding someone else's hand, his eyes would unconsciously turn elsewhere. Seeing her crying for another man made his heart hurt uncontrollably. He decided to leave her and fulfill her happiness, thinking that he could forget her. However, five years later, when he came back again... Was it she who had changed, or he who had changed? She and their past were so vulnerable. That's all, after all, we lost to reality. In this life, I just want each other to be safe