Starlight17

The Original Sin of Soul society; A sin that questions the very root of the morality of the Shinigami, which was erased from the history by their noble families. A million years later, Shinigami Araya Shohei, who was retired from the services and quietly living in the human world, decided to involve in their mess and started a whole new chapter.

The story of the older twin of Shouto, Hiroto Todoroki who was born with extremely powerful Ice quirk. How is he able to become a Pro hero worthy of being called the Guardian of the nation is the rest.