As the saying goes, there is no room for two tigers in one mountain.
There can't be two protagonists in a world - if there are, then get rid of one.
A world cannot exist without a protagonist - if there is one, create one.
Therefore, no matter what you have been and for what reasons you have become the "extra" character, what awaits you is the fate of being an enemy of the entire world.
A whole world, or two whole worlds.
——Ajin is such a character.
But she had no idea.
Later Ajin found out.
She actually didn't really want to know. But he couldn't hold it off, and the knife was already stretched across his neck.
What should you do if you want to become less redundant? ——How simple, just get rid of the other one.
But she didn't want to do this.
——What should we do?