Doomsday: I Built a Fortress in a Cave

At the graduation ceremony, Yara Sue is reborn and sent back before the dinosaur apocalypse hits. In her last life, the campus belle Luna Zoey framed her, and she died in a dinosaur’s jaws. This time, she grabs the ownership of the Kanas karst cave first and takes out a $400 million loan to turn it into a doomsday fortress that even nukes can’t crack, After the system activates, she tames pterosaurs, T-Rexes, and sauropods, building a dinosaur army, Luna Zoey, who also got reborn, keeps teaming up with thugs to storm the shelter. She even throws in with the Azure Dragon Group, using mechanical dinos to steal Yara Sue’s home. Yara Sue goes alone to conquer the lord of the thunder dragons, then leads a massive dinosaur army to strike back and end her old nemesis personally. Over the past seven years, she traveled the world and used dragon-taming collars to send every dinosaur back to its original world. The apocalypse ends, and human society starts to rebuild. When Yara Sue thinks she can finally live peacefully, the temperature outside her window suddenly drops to -4°F. The age of extreme cold quietly begins.