Hello Listeners! This is chapter 1 of Throw a Chair Through a Window and Call It a Day by jaded_ghoster on A03.
Fic details
Chapter count: 8
Word count: 120k
Author's fic summary
Nezu goes on a week long business trip and makes Aizawa the temporary principal while he's gone, giving him all the powers the principal of UA would normally have. Aizawa, prepared to use this power to it's full capacity, silently vows to make as many changes to UA as he can in a single week. He appoints Midoriya as his secretary for the time being and together they wreak havoc among the school, showing no mercy to any obstacle in their path (And maybe becoming father and son along the way). The rest of the staff and students are left to sit back and watch as everything they know goes up in flames.
Fic link
https://archiveofourown.org/works/26004160/chapters/63225232
Image sourced from My Hero Academia Anime series