First day of meeting them (Preschool)

Hari Kurono (Chrono), Kai Chisaki (Overhaul) and y/n l/n has always been friends since preschool, elementary, middle and junior high.. but all of that changed halfway through junior high. They suddenly just stopped coming to school. You were nervous and scared because they were the only friends you ever had. But in sophomore year, you hear familiar names and see familiar faces, is your mind just messing with you or is it really them?