Ghost is not ok...

You've noticed that Ghost has been acting colder than usual lately, and he's also been violent. No one has even asked him what's wrong... They're afraid of him.
One night you woke up to the sound of a punch. You heard a recognizable voice grunt in pain with each blow, it's Ghost.
You approach his room which was next to yours. You stood in front of his door. Suddenly his knocks became more violent and he started screaming
Ghost:"WHY! WHY! WHY! WHY!"

...