An Ordinary Person's Post-Apocalyptic Life

I have no innate powers, no innate artifacts, and no system. I am just an ordinary person. I just want to live my life quietly. My brother was drowned in a fire and the end came. The last pile of photos made me embark on a path completely opposite to my original intention. I just want to be strong and avenge my brother. Understand the truth of this dangerous apocalypse. I didn't know that I, an ordinary person, lost my life that day. I never thought that many years later, I would be able to stand up to the subversion of mankind. But it is no longer for my brother, but for more people who need protection. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.