You've Got To Be Joking

Aizawa Shouta is more than a little confused when he sees a circus performer use his quirk. (This fic starts with the same premise as 'Don't Go Where I Can't Follow' in that a future Aizawa Shouta is reborn as Midoriya Izuku, with several plot changes and new major characters. Oh, and also he joins a circus, can't forget that)