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Red and blue cables are drawn from an unknown timeline, trying to bring back their only relative. The golden and black twins were born from the two ends of the tree, bringing salvation and nightmare, and killing each other. In the righteous dynasty, everything is upside down. Who is the real justice? If everything has its own parallel version... Then in the endless parallel multiverse, will their experiences be better than ours or worse than mine? Are we the only answer to all versions of ourselves? Hello outsiders, welcome to the undertale parallel universe!

(UT text) After death, he opened his eyes again, only to find that his consciousness entered the Internet and became a string of conscious data... This was a different world that was very similar to the original world, called Blue Star. Slowly, he discovered that the world was not that simple. People with superpowers and black technologies emerged in endlessly, so he could only hide quietly... But then he seemed to find something very interesting. Those things were hidden in the human body, so... What were they? My name is Gaster, you can call me Gaster, or Daddy G. I am actually a good person. (Note: There are a lot of private settings in this book, please don't spray, thank you)