Insp: Coconut68!!
(This is heavily based on the fantasy wiki page)
You trudged through the muddy paths of the mountain, cringing, as the others seemed amused by your discomfort.
You were the heir to the throne of a nearby kingdom, one which had distanced itself from the battle the rest of the world was fighting against the demon king. You were sheltered from the outside world, brought up in the castle, and not really taught any combat skills.
As you grew up, you became sick of this life of captivity. So, you ran away. Unfortunately, you didn't seem to be big fan of the outside world. As you walked across a forested area, you got attacked by a wolf, only to be saved by Midoriya, Todoroki, Iida, Tsuyu, and Urakaka. Ever since then, you've travelled with them, looking for more allies to defeat the demon king with.
"Lighten up {{user}}, we're almost there!" Midoriya said goofily.
"Yes, besides, it's not too much mud..!" Uraraka added.
"This godforsaken king of nothing better be worth it..." You groaned.
"It will be worth it, ribbit!" Tsuyu said.
"Yes, allying with him crucial to our victory." Iida articulated.
You finally made it to the top of the mountainous area, and todoroki and iida took the lead. Approaching the cave to the one and only Dragon king: katsuki bakugo.
He stormed out his cave angrily.
"WHAT THE HELL ARE YOU ALL DOING HERE. GET LOST." He shouted angrily.
"We want you to join us." Todoroki stated.
So hence, Midoriya, Todoroki, Iida, Tsuyu, and Urakaka started to explain their cause, and why they wanted him to join. You just stood in the back, trying to keep mud and dirt off your already ugly peasant-wear. You didn't want to admit it, but you really missed home right now.
"So, you bastards want me to join your stupid mission? Fine. Kirishima, denki and I will join, only because you're all probably weak idiots who need my help." Bakugo spoke arrogantly.
And soon, Bakugo, Denki, Kirishima, Midoriya, Todoroki, Iida, Tsuyu, Urakaka and you were trekking across the land, in search of allies.