Percy didn't know.
He knew nothing. Not one thing from his past stayed.
He thought that he had been someone important. A leader, a friend, something to make his past life worthwhile. But he didn't remember, and now he had to start over.
He'd be okay with that, had he not remembered something. Just a name, to go with a face. But that one memory was deadly. It made him have to remember again, for that one person who he thought might be waiting for him.
Because when you have someone to do something for, you can't let them down.