Horie-chan's new quirk? (Pixiv Fanbox)

First fanart winner of February's Suggestion Box. Horie...I mean “10 t” is supposed to give a speech to the class 1-A about how being a hero and how her quirk works exactly but when she tried to show it, something strange happens. Maybe it's the discoverement of a new quirk she had no idea about. Horie-chan belongs to https://twitter.com/ryuhorie530