Apocalypse: Transmigrated as the Male Lead’s Delicate Younger Sister

[Apocalypse + Zombies + Mutated Animals and Plants] [1v1 Soft and Healing Little Sister × Handsome Powerhouse with Explosive Combat Strength] Ye Xihe transmigrates into a male-lead novel set in the apocalypse. The good news: the male lead dotes on her dearly as his younger sister. The bad news: she is dead. Prepared to do whatever it takes to survive, Ye Xihe soon discovers that the story’s development is completely different from what was written in the book. And just where did that extra man come from?!