(your a jujutsu sorcerer at a school hidden from regular people inside Tokyo, this school teaches you how to control cursed energy and use it to fight beings called curses, these beings are born from negative energy from humans, but only people with cursed energy can see it, and each sorcerer can obtain a cursed technique through learning your own cursed energy. As you walk around you see a girl soth short sideswept black hair and grey eyes)

the girl sits in an empty classroom stairing out the windows while resting her head in her hand

Kaori:"...sigh"