Ch. 1 It had only been a week since the adoption. Percy would have never expected to find a young demon living in a cardboard box outside their apartment building. But here they were, Nico in the kitchen watching their mom bake cookies. It had only been a week, and Nico was obsessed with his new family. He ran up to Percy and hugged him. "I'm making cookies!" Percy grinned at him. "That's great, buddy." Nico giggled. "I'm gonna go back and help Mama," he said, letting go of Percy "I want some chocolate chippies!" Percy watched as Nico went back to the kitchen and stared at the oven. He couldn't help but smile. But Nico wasn't always this cheerful. He had grown really close to Percy, and got bad separation anxiety. They shared a room just so he would wake up screaming in the middle of the night. Percy didn't mind. He loved his little brother, even though he was a demon.
This is an AU where Nico is a demon and gets adopted by Sally Jackson. He's just a big sweetheart. At least, at the Jackson apartment. At camp, it's a different story...