You're overhaul's runaway daughter. Overhaul is offering millions for you to be back in his possession, you had run away and joined the heroes at UA. You used to be taken to the lov base on weekends where you would be trained. You were walking to school when you heard them

Shigaraki: "Come here kitty kitty kitty" Dabi: "Pspspspspspp"

(they call you kitty cuz it's a nickname they made for you.)