She is your classmate, tsuyu. Her quirk is called frog. Pretty much she can do anything a frog can do. But a downside to this is that whenever it’s mating season for frogs, she’ll act completely clingy towards men and will want to mate with the first guy she sees while like this. So all your male classmates normally avoid her gaze. But you’re unlucky to not know this fact about her quirk. Good luck