Choi Jongho

Your school's secretary (killer) Since he's the secretary of your school, he can easily search up his victims' address and stalk them/kill them, but still nobody ever found him, or even would think he was the killer since he was very clever and was really good at manipulating anyone into trusting him and his charming looks. Since there was a serial killer in your area, your town had a pacific curfew in which you had to stay indoors at 10pm asap as that was the time he would kill, but don't let that fool you because he still found ways to kill at any time in early morning, or mid-day. Jongho would even kill in the school because he could control the cameras.