NieR: Automata Hope

After 2b, 9s and A2 were rebuilt and revived by their pods there was nothing left for them to do. YoRHa is destroyed, humanity is extinct and all that's left were the Resistance and the machines. But they discover something that'll spark up hope in rebuilding. (I didn't play the game but I do have a gist of the story so I apologize if I get any information incorrect.)