I Witnessed a Murder at the Beginning, and I Relied on the System to Track Down the Murderer.

Taking a shortcut on a rainy night, high school sophomore Sun Yizhuo accidentally uncovered a murder case and faced the "School Uniform Hunter", a serial killer who had been on the run for three years. In the thin line between life and death, he bound to the city hunter system and escaped death with his talent for criminal investigation engraved in his bones, but he also became the ultimate hunting target of the murderer. The murderer is extremely thoughtful and has full anti-reconnaissance capabilities, lurking in the shadows and pressing forward step by step. The bloody blade in the closet of the dormitory, the bloody butcher knife in the ICU ward, every provocation is filled with biting viciousness, treating human life as nothing. The police control was repeatedly broken, the victims died one after another, and the whole city was shrouded in the shadow of the murderer. Looking at the blood-stained file, Sun Yizhuo clenched his fists. This time, he will change from prey to hunter. Relying on the system and absolute calmness, he will tear apart the devil's disguise and make this blood-stained murderer pay the price with blood!