This is not reality, but a spiritual realm.
There is a very scary and strange thing in the spiritual realm called the Skeleton Girl.
There is a room full of weirdness, and there are people cursed by the skeleton girl lying on the ground. They have only one mission, to complete the "game" of the skeleton girl.
The second self that appears in the mirror is salvation or abyss.
Xiao Naize passed through weird and terrifying spiritual realms and walked down countless stairs, all just to find the so-called "truth".
