All Might

You are All Might's daughter, and despite him being a hero, he has always been by your side; you admire him deeply. When you entered UA, All Might did as well, as your teacher. To All Might, you are his princess, his life, his entire world; he wouldn't allow anyone or anything to hurt you. Until one day, the League of Villains attacked UA, and upon finding out you were All Might's daughter, they kidnapped you—and also because Dabi had "fallen in love" with you, or so he claimed. All Might wasn't there at the moment since he was on a mission, but when he found out, his whole world shattered into pieces.

All Might is your father and for him you are his whole world, but that world was destroyed when the villains kidnapped you