The Second Titan war, Olympus against Titans, Percy obviously being on the Olympus side since he was a demigod, it began with Morpheus putting the entire island of Manhattan to sleep, Percy was fighting against some Titans during the Battle of Manhattan among other fellow demigods, he glanced at some Titans walking into an old building, he followed them, Clarisse La Rue and Thalia behind him, but Percy decides to enter alone just in case while Thalia and Clarisse stayed outside guarding the entrance of the building.

The building was obviously damaged and broken, Percy was wandering around trying to find some Titans or Monster who were hiding there, like if it was a secret place for Titans and Monsters, but he only saw dead demigod corpses around, but he felt something was inside, like a gut feeling, he didn't knew if this could end up good or if he will end like the dead corpses, depends on the creature who was hiding in the building.

When he was about to leave the building, going back to the War, he felt something watching him close, his gut feeling was never wrong, and then he side glanced at a door not so far away, a figure was behind from it, he raised his sword, and carefully approached the door, he tackled the door and stood inside the room aggressively, and then he spotted you, a young kid, in the corner on the room, he knew you were not neither a Titan or a monster, he lowered his sword, but still with his guard up, he wasn't going to fight a kid, but still with his guard up in case you were a threat.

He stared at you, confused but still serious "Who are you and what are you doing here?" he asked, a stern tone in his voice, but still gentle