Apocalypse + zombie siege + infinite supplies + ruin exploration + harem + no dropped story + no toxic elements
Su Muyan spends all day dreaming of getting by without lifting a finger. His favorite thing is to curl up under the covers on a rainy day and enjoy a good nap. Then one night, after drifting off happily, he opens his eyes to find himself in another world.
This wasteland city is full of dim, yellow sand, and hideous zombie monsters are everywhere. Things look bad, but from the start he has a cozy, sturdy shelter. As he explores, he discovers that this dome-shaped shelter can keep upgrading. Though he's in another world, he hasn't forgotten his original goal: using the shelter to lie flat and enjoy life in a zombie-filled apocalypse.
It's a little bit toxic in some places, but it's not bad.