Every time Hei Anjing finished his tasks in a certain world. That Star will be sealed and will enter reset. The First Small Star started its reset which is why when Hei Anjing returned to the system space it disappeared from his sight.
A resetting star will have everything changed. Even if the former Heavenly sons of that world were killed, a new person will be chosen to take the seat of that world's throne. Those who died and were punished during the time Hei Anjing was inside that star will never return. A new soul shall be born to take the position of Heavenly child as whether this new soul will follow the ending of his predecessor, will be decided by his actions.
This phenomenon can only happen when the current Heavenly sons or daughters of the said world died or were punished accordingly by the chosen outsider to clean the world.
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