The Fall of the Earth, the Expedition to All Realms

I am Lin Zhong, a god stationed at the edge of the galaxy, managing the souls of thousands of travelers. When the "Suppression Agreement", a higher civilization from outside the system, invaded, I fought bloody battles on the border for hundreds of years, and finally watched the defense line collapse. The moment I retreated to Earth, I told mankind a cruel truth: In the dark forest of the universe, we are worse than ants. The psychic mecha burned in the starry sky, and the two-dimensional foil slowly unfolded. At the last moment when human civilization was about to be completely wiped out, I burned my godhead and sent my final cry of grief to all the heavens and worlds—— So, sword immortals came from the sky, emperors shattered the void, and starry sky lords crossed dimensions... Countless worlds I have managed, the strongest in those stories, all looked at this blue planet at the same time. They said: We will protect this earth. This is not the end. This is... The beginning of the expedition to all realms.