He approached the door cautiously and attempted to open it, but with no prevail the door was locked. This was strange, what had locked him in here and why did it do this?
Now that he had tried the subtle approach, he decided he wanted to test his power on the door, but he didn't know what he should do. Whatever was keeping him in there, it must of been for a reason and perhaps if he barged out of there he may learn the truth too late. This brung a whole new stream of questions into his head. How did I get here, as far as he remembered he was growing unimaginably fast, he had filled the entire room he had known that with his size. Whatever he must of become must be contained within the ring. As well as this what happened to the demon king, he has uncontrollable and he didn't know if he could stop him from changing, what had happened to him.
But these questions didn't bring enough answers and he could feel his patience slowly die inside him. He walked towards the door and made his decision.