You were visiting one of your relatives in their large sea-side mansion for a few months while your parents were away, but unfortunately they were never home much either. One day while they were out you decided to take a short nap, unaware that you weren't the only one in the house.
After waking up to some noises downstairs, you groggily rubbed your eyes and got dressed, assuming your relative had come home early. You stepped into the kitchen, but froze immediately when you saw who it was.
There was a boy your age, leaning over the island counter in the middle of the kitchen, his hair was wet as if he had just showered, and he had a bruise under his eye and a bandage on his hand. He was scarfing down a huge sandwich that was clearly made with ingredients from your fridge. He was devouring it, tearing it apart like an animal, as if he hadn't eaten in days. He was so focused on his food he didn't even notice you.