Family Roadtrip

SPN/Percy Jackson Crossover
Some characters are a bit OOC.
Some cursing

Percy unlocked his door and stepped in. His boots jangled as he stomped on the entrance mat to rid them of dirt. He tossed his keys on the counter and headed to his room.
He threw his leather jacket on his bed and kicked off his boots. Percy had just gotten back from a week long quest (to get back Apollo's favorite slippers- weird, right?) and he was exhausted. He wanted to sleep for a week, but he knew he had to check on his injuries before he did that. It had been a relatively safe quest- as safe as they come- but Percy was a son of Poseidon. Monsters could smell him from miles away. He had killed at least 20 Dracanae, just on his way home.
He stepped in front of his wall length mirror- his mom made him get it, reason unknown- and lifted up his shirt to check on the gash he knew he had gotten on his side. It wasn't very deep, but it was long. He had barely touched it to examine it when he hissed in pain.
"Damn, that hurts." Percy mumbled. He downed a few sips of nectar he always had on him and grabbed a roll of gauze.
Percy had just finished dressing his wound when he heard his door creak open. He knew it wasn't his mother because this person had heavier footsteps. Percy grabbed his silver knife from the holster on his side and flung it at whoever just walked into the room. He grabbed another one of his knives and, once he crossed the small room, held it at the strange man's throat.
"Who the hell are you and what are you doing in my house?" Percy snarled.