In the Beginning, there were two brothers. A dark-haired boy, and a light-haired boy.
They lived in a mansion with their father.
Their father was a very businesslike man who tolerated no nonsense in his household. The dark-haired boy was a very artistic, very nonsense boy. He was constantly stuck in the fine line between imagination and reality, spending hours in his makeshift studio on the second of three floors, right next to his own room. His friends often called him the Artist jokingly. Often, the boy's father would lock the studio, telling the boy to do his studies, trying to force his son into reality. And then, when he could not express the whirling and storming within his mind, it would press against cracks, trying to get out.
Sometimes it exploded.
The light-haired boy also walked the fine line between the two, but instead of expressing it in anything, it all just got stuck in his head. He didn't know how to express himself, so he usually didn't. And he was fine with that.
But the light-haired boy thought differently about things. To him, the things that populated his head were real. They were just as real as the things on the other side. In his thought, Just because it was in his head means it's not real?
The two boys were fourteen and sixteen, respectively.
They had a normal, plush life that neither wanted.
To them, the real world was in their heads.