A Dead Ghost's Self-Cultivation

My name is Ling Nai, and I am a high school student with a bright future. Although I am handsome, versatile, and have been elected as the best student in the city three times, in fact, I am not only a killer, but also a ghost. Whenever midnight comes, I am no longer me. Rule 11 of the Killer Code: When your back is turned to your opponent, it is your best time to take action. Article 7 of a ghost's self-cultivation: Ghosts cannot directly attack the opponent's back, but in front. Rule 18 of the Killer's Code: Killing with one hit is the romance of a killer. A Ghost's Self-cultivation Article 22: Absorbing the enemy's fear and pain is the beauty of killing. Rule 30 of the Killer's Code: Don't cause unnecessary killing. A Ghost's Self-cultivation Article 32: Kill every living creature that sees you. Rule 45 of the Killer's Code: Don't let every witness go. Article 27 of a ghost's self-cultivation: Don't look back... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.