Survive in a Narrow Place

Between life and death, there may be an unknown space, a space where those who were killed by him and those who have not yet achieved their wishes can escape... Slit world, Only the murderer, unwilling to die with his eyes closed, hid in the slit world, which is a place full of darkness. The deceased asked the pursuer from the slit world to go to the door of his death for him and look for the traces of the murderer. But everything was not that simple. The pursuer had to experience the pain of the deceased again. When did the slit world appear, and who created it? Is there any unknown secret...