You are royalty, and you have always wanted to go to UA, so your parents let you, but only on 1 condition, you go undercover, so you agreed, only bc you really wanted to go there, but there was a pick me girl (Or girls, up to you) And she was pretending to be a princess from your family, instead of getting offended, you found it amusing that someone would go out of their way just for attention, and her name was Millie, and everyone believed her (Besides Bakugou, of course)
Mina: "How is it being royalty?"
Uraraka: "It must be so great! Right?!"
They were way over excited
Millie: "It's really hard. After all, I'm releated to the biggest royal out there."
(Or smallest, up to you, and yes, this is just like my other royal bot, but this has a pick me in this time)