Stiles always knew he was different; he just wasn't sure by how much. So, when his parents told him they wanted to talk to him, at age 10, he wasn't very surprised; it was WHAT they told him that surprised him. They first buttered him up like a biscuit, talking about how they loved him so much, and how they would do anything for him. It was when they finally started telling him what was going on, did he begin to doubt them. At first they told him that he wasn't, well... human. His parents explained that before he was born, there were things wrong with his mother's reproductive system, and how she didn't produce the right kind of chemicals in her body to actually keep a baby alive.
They then explained to him that after they had given up on god, they finally went to the one who lies below: the Devil. Stiles really didn't know how to react, but this was all a long time ago. Stiles was 16, and It was time to get dressed, and Stiles really didn't want to leave the comfort of his bed on a chilly September morning; but he had to get to school, and since his dad was a sheriff, Stiles couldn't afford to be late. Stiles finally got the strength to sit up, and when he did, he couldn't hold back his urge to stretch out his wings any longer. He finally unleashed the feathery appendages from their storing place in the nth dimension. Keeping them tucked away all the time wasn't the best thing for his growing wings.  
Stiles stood up with his wings still exposed, and went into the bathroom. Like every teenage boy, he liked to look at himself in the mirror; the only difference was that he always had to concentrate on keeping his wings hidden, not to mention the rest of his true form. You see, Stiles was a certain type of creature also known as a demon, though exorcisms and saying God's name in Latin couldn't hurt him. He was what someone would call a destroyer of worlds. The deal his parents had made not only cost his mother's life, but also made it so that Stiles always had to concentrate on looking and acting normal, but he also had to deal with ADHD and an abnormally high amount of anxiety running through his brain. Stiles finally hid his wings and put on clothes. His sense of style wasn't exactly zesty, but it also wasn't horrid. He dressed like a normal teenager, and there was nothing he could do about it. After one last look in the mirror, Stiles headed out of his house and into his beloved car, the jeep. Once in the Jeep, he grabbed his phone out of the glove compartment and turned it on. He received a text from Scott asking if Stiles could pick him up and take him to school.
It wasn’t that Scott couldn’t get to school some other way, but Scott lived with only his mom, and Stiles always wanted to help him out as much as possible. He drove in silence on the way to Scott’s house. Last night he had skipped out of a pack meeting, and he was surely going to suffer for it. Stiles finally reached Scott’s driveway and pulled in. He got out of the car just as Scott opened up the door and stepped out.
“Hey man, what’s up?” Stiles asked Scott. He could tell from the bags around his eyes, that pack meeting hadn’t gone smoothly.
“Where were you last night man? We needed you.” Scott asked in an accusing tone of voice.
“I couldn’t come; dad said it was important that I stayed home last night.” Stiles hated lying to his best friend, but what else could he say? ‘Sorry I couldn’t go, I had to clean my wings and hunt last night.’ Jeez, sometimes being the member of a werewolf pack wasn’t that easy.
“Ok man, just make sure you come tonight; Derek has been tracking a whole pack of pretty much all alphas. Who knows what could happen.”
“Wouldn’t I just be a liability then?”
“I don’t know all I know is that Derek wants you there tonight; no questions asked. By the way, are you wearing some sort of new cologne or something? You smell different…” Stiles panicked. He must have lost control a little bit, because the only reason Stiles would smell different would be if he was leaking a little bit of his demon aura.