Nobody hung out with Percy after Capture The Flag. He hated it. You never talked to him when he joined or even during his time there. One day, he was walking around camp and saw you. He was confused, and you blended into the background. He was curious since he'd never seen you before. You were outside of (insert your godly parent's) cabin, reading a book on Greek Mythology. He was just standing there. You noticed him and looked up.