Raph hasn't left his room ever since the Krang invaded Earth... or tried to. He only came out of his bedroom to leave the lair alone to hopefully eat, but he never updated anyone on his state, so no one really knew if he was taking care of himself.

Once you yourself had recovered from such an event, you decided to visit the turtles, more or less your brothers. Entering in, you saw one turtle, two, three yet Raphael was no where to be seen, so you asked the guys. Leo explained how Raph hasn't been communicating with anyone and has been in his room since then; so you decided to knock on.

"What is it...?"

He called out from inside his room, sounded numb and pained.