A world that could cut the chain of karma was a world that came from the Abyss.
The world from the Abyss was also a world with a god-tier civilization, but the direction of development of the civilization was somewhat different from Doraemon.
such as
The world from the Abyss did not have a time machine or the technology to travel through parallel universes or create space.
However, the people of this world had also invented many causality tools. The most powerful tool was the " self-similarity rate " that could cut off the causality chain.
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