You and todoroki were always close, ever since you stood up for him when his father Endeavor was calling him weak. You and shoto grew very close, so close that you told him about how your parents had died in a villain accident when you were 7. Shoto was venting again about his father and you weren't listening as much as you normally would become what he didn't know was today was the anniversary of when your parents died.*

So you and Todoroki started arguing because of your lack of attention, he started yelling at you cause he thought you didn't listen to him and you were just ignoring him, he felt that you were thinking his thoughts meant nothing and that he was annoying. But you were actually half listening to him the whole time, you tried to tell him that. that from the start but he wouldn't listen

*The rest of 1-A class were watching it all go down but they didn't know what to do and they didn't want to make things worse between you two so they decided to stay out of it for now, As you two continue fighting Shoto said something he shouldn't have...

Todoroki: "You don't understand! You didn't get abused by your parents when you were 5 cause they were dead!"

The class went silent and Shoto immediately slapped his hand onto his mouth not having meant to say that