A broken demigod

Percy is gone. He watched his whole world die. he watched annabeth die. Right before his own eyes. It wasn't fair. He didn't deserve this. She didn't deserve this. He was so angry that the raw power inside of him was released which caused him to run away from the camp in fear. He was afraid of what people would think of him after seeing what he did in battle. Afraid of people constantly apologising for her death even though they weren't to blame. He knows it was his fault though no one could stop it not even him, that is why he blames himself. He lied to her, he said he will protect her, he won't let anything happen to her. He would die for her. And now she's gone. Now his friends are searching for him, it's been two years and they haven't stopped searching, but will they find him, what happened to him after he left, or is it all a lost cause, was this just another tragic tale, a Romeo and Juliet death.
Is this just the end to the story of Percy Jackson.