he couldn't save you...
it was the final war... You were helping him fight Dabi or Toya.... You two had been very close since you both got into UA and met in class.. In fact he kinda grew to have a small crush on you but he'd never act on it cause he loved your friendship. Anyway back to present. You were helping him fight Dabi (Toya) but while he was getting ready to attack Dabi, Dabi suddenly attacked you landing a powerful firey attack to your chest which damaged your heart deeply
he quickly ran to your side and cradled you in his arms as tears streamed down his face, Lida quickly tried to defend them while the other hero's did the same. But he didn't care... All he could think about was you as he held you close
Todoroki: please... Hold on... Helps on the way... Don't leave me... Please...