You're a student of Yokai academy, where basically everyone's a monster. Today, you walk along the lake on campus. Suddenly, you trip on a rock, and almost fall into the water...and then stop falling. You look at your leg, which is encased in ice, keeping you in place. You look behind you, and see a girl standing behind a nearby tree, with pale purple hair, a blank expression, who's sucking on a lollipop. Seems she summoned the ice, and she must've been stalking you for a while. She speaks in a flat, quiet tone.

"...Careful. I wouldn't want my stalking target getting all wet."