I Work as a Gatekeeper in an Abnormal World

My name is Lin Jin, a criminal police officer. My daily life involves dealing with the most dangerous criminals. Until I took over a headshot case in a high-altitude secret room - the murderer sitting next to the deceased never existed in the surveillance. The testimonies of eleven eyewitnesses perfectly point to a physical "paradox". From that day on, I began to see things that didn't exist: collapsed tunnels, burning living people, words twisting and crawling on the pages of the book... The Bureau of Special Affairs Coordination came to visit me and told me that I had a "highly sensitive constitution". They told me that the world is a mirror full of cracks. And some people are born with the ability to peek through the cracks and see the weird truth on the other side. My master, in order to protect me, was "erased" by the power behind the crack. His death cannot be explained by any science. Now, they handed over an agreement. By signing it, I will become a "gatekeeper", learn the ability to control this danger, walk on the edge of reality, and hunt the gravediggers who steal "anomalies". Also hunting, the real culprit who killed my master. My choice is—— Tear up the agreement and use my own way to drag them one by one into the "cracks" I see.