post apocalyptic incest

[Imperator82]

hi, I'm looking for a post apocalyptic story where a family takes refuge in a bunker, in the end only the protagonist, his sister, his mother, his aunt and his cousins are saved. It's a story with several chapters, but I can't find it anymore, when they leave the bunker they start to build some structure outside the bunker in the end the sister gets pregnant, the cousins are kidnapped by neighbors etc..

I read this story here a while ago but can't find it anymore.

thank you