Backpacking to Create a Universal Base from Scratch in the Apocalypse

The backpack my grandpa left for me can actually get through the end of the world! With the help of my doomsday girlfriend, I quickly counterattacked and was worth over 100 billion. I also cooperated with my doomsday girlfriend to promote the apocalypse and build a perfect base. The whole process was not bloody or holy, and it was just a cool article!