Reborn in the Apocalypse: I Have a Pocket Dimension and I'm Invincible

Apocalypse, Core Crystals, Superpowers, and Blades or Halberds. A Cold, Emotionless Hero, No Heroine

Why Are Apocalypse Stories Always About High-Rise Safe Houses? What About Bunkers or Villas?

Apocalypse Stories with One Heroine: Any Recommendations?

Zombie Apocalypse Stories with Crystal-Core Hunting and Awakened Powers

Looking for books like "Sweet Romance: The Little Demon of the Apocalypse Wants Kisses and Cuddles". Even better if the male lead is a special forces soldier and the female lead is a little demon.

Any Post-Apocalyptic Stories with a Cold-Blooded, Ruthless Lead Who Isn't a Goody-Two-Shoes and Kills When Needed?

Cold-blooded, ruthless, no saintly heroine, no female lead, apocalyptic fiction.

Killing Zombies, Digging Up Cores, Absorbing Crystals to Evolve

…I mean leveling up one level at a time.