A revival of the Slytherin instincts

...Explanations on what Harry is? Anyone? I told you earlier...

Harry held Draco to him, his wings coming out and wrapping out his mate. He could smell him, and he smelled wonderful... He smelled strongly of beauty products, but under all that... he smelled green apples and summer. His creature side was begging to claim him, at least... his Incubus was, his Veela knew Draco was too young. Harry's creatures were fighting each other, one wanting to claim their mate, the other refusing. Finally Harry let loose a large, deep, terrifying growl, before shaking his head and hugging Draco tighter. "Mine. My mate." Harry breathes deeply, before stepping away. He looks over at Blaise, before saying, "Smell you too, not mine, not yet, but close." Everyone is shocked, knowing that this wasn't Harry, but one of his creatures. He stopped, shaking his head again, before forcing his wings back in. He looks at them all, as his eyes go back to their normal, forest green color. His fangs go back into his skull, and he looks perfectly normal... not like Harry, not quite, because his skin is unmarked, there are no scars, nor bruises, anywhere on him.
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"Harry?" Fred asked, getting closer to his younger brother. He was making sure that he was completely in view, so that Harry wouldn't be upset. He knew that dominant creatures tended to be very protective of their submissive, he had learned that from Bill and Charlie. Both of them had been dominants, and had quickly found their mates. Percy was taking longer, but everyone knew he was also a dominant. Fred and George had yet to get their inheritance, the family assumed it was because twins take longer, and Fred had to agree, but he knew they'd be dominants as well, it was just expected at this point. "Hadrian? You alright?" Harry looks at his brother, before nodding slowly. "Am alright, found Mate, more smells though, make me... weird?" Fred chuckles softly at the way he's speaking, knowing it's because he's trying to hold his creature in. "You're doing a good job, I know it's hard to not to jump your mate. Do you need to ask Bill or Charlie for help?" Harry quickly shakes his head. "No, they're threats, not safe yet. Ask Percy when need." Fred nods, not arguing. "Maybe, you can help Percy find his mate? Hmm?" Harry looks at Fred like he's insane, before saying. "Percy has mate. My age, not older, not creature... smells like old books, and rain."