(In this alterned univers, dabi ans Shiggi are normal. No villains.)

you coul describe the todoroki brothers sibling soul mates. Shoto and touya, who also gos by dabi, are the closest lf friends. Dabi cares more for shoto then his own life. Sure endeavor is an abusive ass but touya has shotos back.

Tenko, also known as shigaraki by his friends, is the older brother of izuku. Thouse two don't hate each other but they aren't as close as shoto and Touya.

(Find your own start)