Infinite Realms: My Senior Brother Sweeps Through the Apocalypse with His Sword

(Apocalypse + survival + infinite worlds + no female lead + laid-back protagonist) Li Huaixin was nothing but a washed-up middle-aged man who liked to practice swordplay in his spare time. When disaster struck, he was still sprawled on his sofa at home, drinking cola, eating fried chicken, and enjoying the good life. An asteroid came crashing down, splitting the world into seven apocalyptic realms. Extreme weather, ice-field thunderstorms, scorching heat and tsunamis, zombie sieges, experimental leaks, biological mutations, and a molten core: every one of them was a disaster. How would he survive? With items? With brains? By stockpiling supplies? No, no, no. Overwhelming combat power was enough to overcome anything. And he had a laid-back attitude to boot.