Demon Profiler

I died in 2043 and woke up in a rookie police officer's bed. Time strangely returned to a year and a half ago, and the serial killer "Nightmare" who was supposed to appear three months later has actually committed the crime in advance. What's even more frightening is that I have 'sin pattern vision' that allows me to see traces of the murderer's emotions. Every time a demon is captured, a more terrifying existence will be born. When I peeled off the cocoon, all the clues pointed to a cold truth - the person who killed me in the future was looking at me with a smile through the mists of time as I walked back step by step... To the crime scene carefully designed for him.