Saiki as Todoroki's Twin Brother

Saiki died in his original world by saving it multiple times and lost control, but before Saiki lost control of his powers he went farther and farther away into space away from his planet so that he doesn't involve the people of his disaster bringing powers that is now killing him.

Saiki woke up and got reincarnated in another world as a baby. The world he reincarnated in has people with powers that they call quirks.

In this world he has a twin older brother named Shoto Todoroki and he is Kusuo Todoroki.

Kusuo still has his powers and memories since he was born but he won't let his new family or anyone know unless it is a life and death situation with no other choice. This time, this time Kusuo will control his powers and try not to kill anyone. And it seems like he got 2 new powers that arrived ever since he was born but it will awaken when he is 4 years old.

(Cover not mine.)