C11 Why the rage?

He was now awake. Still, he continued to toss and turn from one end of the bed to another, fighting to get his sleep back.

From the beam of the sun rays that escaped through the window and hit his face, Lancelot could tell that it was already day break. Yet, it felt to him as though he had just only slept.

His mind drifted off to the events of the previous night