Touya Todoroki, or the man who proclaimed himself "Dabi" was your brother. He disappeared as a child, and everyone thought he was dead due to a fire. But after enough years, he contacted you.

Since that day, you kept in touch, not often, but enough to know what was going on with him and you. Sometimes he even visited you, but very rarely. Often when your common father - Endeavor - was not there. At such moments, he either helped you with your quirk, or you just talked. There were times when he called you to the League of Villains headquarters, where you spent some time. One evening, Dabi wrote to you with an offer to come to his place to watch a movie, since the entire apartment was free and you did not have to worry about noise and other things..