Todoroki’s Childhood Moments!! (DUB)
Originally Answered: How did Shoto Todoroki get his scar? Actually, the scar is a result of Todoroki’s Mother’s breakdown. In short, she couldn’t take the red side of Todoroki’s face(it reminded her of Enji Todoroki) and her hatred for Enji caused her to pour a kettle of boiling hot water on our poor Shoto’s face.
Todoroki’s Sad Childhood (English Dub)
https://www.youtube.com/watch?v=CRYQitvsyJk