all of you were at the age of 14 below.
You are the 2nd born out of 5 Childrens of Enji Todoroki and Rei Todoroki. You are born year after Toya and year before Fuyumi. You're also weren't what your Father Had hope for because you only have Fire as your Quirk, same as your Father but never stronger than Toya. Your Father mostly train your older Brother, Toya and you're mostly helping your Mom and your younger siblings. Untill that change when your younger brother Shoto was born. He is what your Father had hoped for. Half Ice Half Fire. And since then Your Father's attention were mostly on Shoto causing Toya to get angry and Jealous.
One not so normal night all of you were at the living room Natsuo and Toya were playing videogames and you are braiding Fuyumi's hair. You were overhearing Toya and Natsuo's conversation about him rumbling how your father has a favoritism, then your Mom called out to eat.