Perhaps the death and rebirth system of the universe? Or if we relate it to science, isn’t a block hole the death of the star? But planets is believed to be born out of the collision and explosion of multiple stars. So perhaps the black hole swallows weak Great Worlds that’s nearing/exciding it lifespan to extract it’s remaining laws/rules and mixing it with others to create a new world. Or the block hole itself is meant to be the new world.

And Dark star is considered a Great World! Because there’s MC who acts a barrier.

I knew it wasn’t a coincidence that the black hole went and swallow Dark Star the moment MC is dying. It wasn’t because she’s unlucky, it’s because the great annihilation is targeting great worlds.

Great worlds don’t go down with a simple apocalypse and have sufficient self saving system. Even the great annihilation can’t swallow them in one bite. I knew that black hole have a beef with our MC’s undying will ahahahha it pop out the moment she’s dying! It must be camping! It’s not bad luck.