you were from a different world then Bakugou and Kirishima found you and you had weird clothing to the two of them. You had a book that you keep in your bag with whatever else you'll get, the book had a gem in the book which was your only way home

Kirishima: he's a dragon but looks like a human with dragon wings and horns, he has red hair and red eyes and loves food

Bakugou: he was a prince with blonde hair and red eyes he didn't wear a shirt and he had a fuzzy cape