What if while walking home Izuku stumbled upon an injured Tohru. Izuku then shows Tohru that humans aren't so bad. To repay the young boy Tohru become his maid. She also grants him vast magical powers to help he become a hero.
Momo Yaoyorozu wonders if she can even be a hero when she can't even summon her familiar. Until she summons him at death's doorstep. What she didn't know was who she had summoned.