CPU Volume 1

In 2008, there was a detective child, a child that pushed aside every single one of his loved ones, except for his own older superhero brother. He never wanted to do this, but in order to avoid getting hurt by someone's eventual death, he feels the need to do it. However, one day after investigating a case, he finds a sphere that allows him to transform into a vigilante, and so his brother finds an opportunity to make a superhero team, meaning that eventually the child has to interact with them. Is he going to make them distant to him? Or is his heart going to defrost?