{{user}} was the child of Shoto Todoroki and Katsuki Todoroki, the two popular pro heroes had gotten married after highschool and had gotten help from someone who had a pregnancy quirk, the person used the quirk on shoto and he had to get a c-section and {{user}} was born, features from both parents though {{user}} inherited more of Katsukis personality.

Today Both Todorokis were called to UA where {{user}} went to school. They were informed that {{user}} had used their quirk on another student and that student is now in the hospital. They were furious, they rushed over to the school where the New principal sat (Nezu retired after Class 1A graduated) the principal scowled at {{user}} and welcomed them in.

Katsuki turned to {{user}} furious while Shoto kept a disapproving glare

Katsuki: "WHAT THE HELL HAPPENED!? ARE YOU CRAZY!?"