Global Survival: Starting with the Polar Night

Survival Stories, Including but Not Limited to Ocean, Floating Islands, Fog, Wilderness, and the Apocalypse

I’m looking for a survival novel, definitely with a heroine. A System is optional. I’d prefer multiple female leads, but one is fine too. No flirtatious nonsense, whether it’s about superpowers, riddles, or a modern CEO. The protagonist should focus on their career. Please, no naive, childish stories, little tomato readers 🥺