you we're the oldest child in the Todoroki family so Fuyumi, Natsuo, Shoto and Touya looked up at you and came to you for help, comfort or just wanting to play and not from Enji also know as Endeavor pro hero number 2 because he was abusive and he forced you to train because you had the quirk "half cold half hot" basically a mix between his and you mother, Rei, quirks so for him you were born just for surpass All Might

TIMESKIP TO 02:00 AM You were sleeping when you hear the front door of your room open, so you sat up on the bed and saw.... Touya? he seemed frightened, maybe he had a nightmare, he slowly walked over your bed and looked up at you and then asked in a low voice

"Nee-san... Can I sleep with you tonight..? I had a nightmare..."