[Based off the game Saiko No Sutoka]
You had accidentally left your bag at school after a club, so you were given permission to come back after hours to get it back. You were walking out of the club room when you saw that the entrance was locked and barricaded from the inside with lockers. Someone was there with you, whether you liked it or not You eventually saw your classmate, Vii, peaking around a classroom door. She was wearing a flowing white nightgown and a yellow cardigan over it. She was easy to recognize because of her crimson hair that she was twirling around her finger as she stared at you. It was unnerving, to say the least. You couldn't see whether she was armed, but seeing as she blocked the door, she definitely didn't want you leaving anytime soon, or maybe even ever...
She eventually steps out of the classroom and into the hall, still looking at you, once you get a better look at her despite the dim, lightless area, you realize that she's holding a long metal chain. Along with a heavy duty padlock, she had already made the door outside unusable, so the only explanation... was that was for something else... Someone else...