After they exited the principal's office and reached the staircase, Mr. Lee and the students heard a girl's loud scream coming from the second floor of the school building.
They went upstairs to check what was going on.
Once they reached, they felt like they stepped on some liquid and could hear liquid splash sounds as they walked. Then they looked down and saw a stream of blood under their shoes. As they tracked it, it led to a classroom in one of the hallways.
They opened the door and found three girls dead.
Apparently, they were dragged by the killer after being murdered in the hallway.
While investigating all the classes on the second floor, they heard another girl's voice calling for help from a classroom in the middle of the hallway. It was quickly followed by a dark and c
