An encounter in the modern Internet affects the fate of three hundred years. Past and present lives, reincarnation, causal tracing... Can I hold your hand again? Can we laugh at the three miles of peach blossoms and thousands of miles of frost in our previous lives? The calamity between you and me started three hundred years ago, and we were bound by time and space, but finally brought you to my side. From now on, no matter whether we advance or retreat, I will hold your hand and watch the rolling world of history together!