Rebirth After the Apocalypse, What Is Wrong with the Script?

In the first life, the sun disappears, darkness covers the earth, and disasters and evils breed from the darkness. I awakened the rare power of light, and I thought I would be able to show off my skills in the doomsday. It turned out—— My greatest role is to serve as a flashlight for others. In the last five years, I survived in the darkness and eventually died in the grave I dug in advance. Open your eyes again and time goes back. I went back three years before the apocalypse. In this life, based on my previous life experience, I bought Bitcoin, used leverage to trade stocks, hoarded resources crazily, used money to build a doomsday fortress, and calmly dealt with the dark doomsday. Until that day comes—— The sun is still high. Tell me, what is the doomsday flood?