"If the rules themselves are wrong, then by following the rules, are you saving the world, or are you perpetuating forgetfulness?"
In this world, some people will be forgotten.
All traces of them will be quietly erased by the world at some point.
When "forgetting" occurs, alien bodies will come.
They are born from the cracks, sneak into the human world, use rules as the medium, and cognition as the boundary, slowly devouring those who have been forgotten.
Some people are exceptions.
Instead of being obliterated, they were trapped in the mezzanine.
They cannot return to the human world, but they bear the only responsibility——
Find those forgotten people before the alien body completely erases its existence.
Xu Chi is different.
He was the only one who took the initiative to enter the alien world.
Concept: They are all forgotten people