Morning came and Harry woke up feeling different. He reached to his glasses that fell off last night only to realize that he didn't need them.

He wondered what had happened. He stood up and walked to the shattered mirror inside his wardrobe. What he saw shocked him.

He was shorter, now standing at 5'3 as opposed to the 5'5 he was at before. He also had a slimmer and more feminine form. his skin was also a pale shade, like the color of the moon in a clear night. His hair was now darker if it was even possible. His eyes had changed a lot too:
They were now a startling icy blue that could freeze anyone's soul. If you look closely you can see a ring of crimson around his pupils. His face became more aristocratic and feminine too. The most surprising though were the big black wings sprouting from his back and the two dark horns on his head.

While he was thinking aloud pop startled him. Turning around to see a letter on his bed, if you could call it a letter anyway. He opened the letter and saw it was from Gringotts. He began to read, don't knowing what it's could be.

Dear Hadrian M. Riddle,

Yes, you read that right. It has come to our attention that you have just recently reached your creature/magical inheritance. We would advise you to come to Gringotts to sort out your inheritance as well as your lord/heirships and a few more important things. Inside are your birth certificates, real and fake. Please come at your earliest convenience. 

-Griphook

Harry, or Hadrian as the letter said, doesn't know what else to do decide to open his birth certificates to see if he may get an answer to what going on.

Birth Certificate (Fake)

Mother: Lily Potter

Father: James Potter

Child: Harry James Potter

Birthday: July 31 12:00

Birth Certificate (Real)

Mother: Severus Snape

Father: Tom Riddle Jr.

Child: Hadrian Mauve Riddle

Birthday: unknown

Well, holy shit, Hadrian thought. He decided to go to Gringotts after lunch, during the Dursley's nap. So he waited.