Rebirth of the Farmhouse

I accidentally bought a piece of ruby, and what followed was a recurring nightmare for a whole month. Is it a nightmare or a premonition? The ruby ​​​​drops blood to recognize the owner and transforms into a portable space. Isn't this a naked cheat? I took my friend and his family back to their hometown in a remote village, and unexpectedly discovered that my friend's brother also had a portable space made of sapphire, and there were many benefits after the two people's spaces were merged... Let's see how to live happily in a world where zombies are rampant.