My Sister Is Reborn in the Apocalypse and Brings Me Space to Enjoy Life

[Beloved sister, slow pace, no community god of war, super powers] Guan Chen's sister Guan Xiaoyu was reborn in space. Before the end of the world came, the two of them hoarded countless living supplies for a better life in the end of the world. Lack of weapons? Go shopping abroad for zero dollars! Short of water? Then take in the Great Lakes! … "Brother, who is this woman? Why is she in your room?" "Ahem! Doctor, it's a doctor. In the end of the world, there must be someone who knows how to treat patients." "Brother! Who is this woman? Why is she also in your room?" "This... Is the cook. She eats lobster and abalone every day, and occasionally has some home-cooked food!" "Guan Chen! You lied to me! Why did I go to your room to cook? No! I... I want to join in..."