I Started with Stomach Cancer and Ruled the Apocalypse by Devouring It.

In the year 2077, the world is in tatters. It's not a metaphor, it's really rubbish. A group of people who call themselves "the Rift Tribe" emerged from the ground. They are strangely shaped and extremely powerful, chewing up the surface of the earth like briquettes. Human beings have been pushed into a few surviving steel fortresses. Monsters are rampant outside, and AI is robbing them of jobs inside. I am one of those unlucky people whose job was taken away by AI and God made a hellish joke by the way. The programmer Cheng Ye has terminal gastric cancer, is unemployed and lovelorn, and has only enough savings to buy a few boxes of "Dawn" painkillers, and is ready to wait peacefully at home to die. Who knows, "dawn" does not bring peace, but brings "surprise"... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.