Disclaimer. No I do not own the characters from Harry Potter. I'm going off of the movies, because it seems to fit a bit better with my idea.
Chapter 1
Harry Potter had been born with a twin. A girl, who looked very much like him: dark hair, and green eyes. She was named: Minante. The night that their parents were killed, Minante remained unharmed. The prophecy was after all about a boy. And Voldemort was destroyed.
With tears in his eyes, Hagrid took both the babies to Privet Drive as Dumbledore had instructed. The two looked like matching dolls as Dumbledore left them on the Dursley's doorstep.
The letters
Harry opened his eyes in his tiny closet under the stairs. He moaned, realizing that it was the twins' birthday. And as if on cue, his cousin Dudley started running up and down the stairs, causing dust to fall on his bed. Harry heard the evil twin sister, Mina, giggling at Dudley's mania.
Harry finally managed to get into the kitchen after being shoved by both twins back into his closet, and had to get straight to helping with breakfast. The living room was filled with presents, and Dudley had the nerve to complain that they weren't enough. Minante had more than Dudley, so she was content and not even trying to hide her glee.
The post fell through the door and Uncle Vernon sent Harry to collect while Aunt Petunia consoled her spoiled son, promising to get him more presents.
Harry picked up the letters and noticed a very strange envelope. Two actually. They were not made with normal paper and they were rather thick. To an even bigger shock, Harry's name was written on the top letter. And he checked out the one underneath it. He nearly dropped the whole pile of letters before Dudley reached out and grabbed everything.
"Here's a letter for Harry." Dudley yelled as he threw the pile onto the table.
"Hey, give it back." Harry tried reaching for it but Uncle Vernon had already grabbed it.
"Who would be writing to you?" Uncle Vernon asked as he looked at it. The shock on his face was almost instant.
"There's one for Mina too." Harry said. He knew that she would want it, and that could mean that he would get his as well. If she threw her tantrum well. She jumped up excited, reaching for her letter.
Uncle Vernon quickly looked at the second envelope and tore them both to shreds before Mina could reach it. She got really mad and screamed so loud that she broke a few glasses.
At the zoo that day, Mina gave Uncle Vernon the cold shoulder. And that wasn't a good place to be. Students in their class had mentioned once that they felt actual cold wind when Mina would give them the cold shoulder. And despite her short temper and general cruelty, people tended to like her. Uncle Vernon especially loved his pretty little daughter that looked like a doll with her long black wavy hair. So he didn't like getting the cold shoulder at all.
The next day, more letters for Harry and Minante arrived and this time Harry managed to see them properly before Uncle Vernon grabbed them.
Harry's fault came when he asked: "Why does it say Minante Potter?"
As they days passed, more and more letters came. Mina got angrier with each letter that got burned at the fireplace.
One morning, Harry sat outside the house, taking a break from his annoying chores. Uncle Vernon had burnt an exceptional amount of letters that morning and Harry was starting to give up. Mina walked out of the house and stopped a few steps away from him. She didn't say anything for a long time as she stood there with her arms crossed.
"Did it really say Potter?" she asked eventually, confusing Harry a bit. He was sure she was going to yell at him for not working. "Minante Potter?"
Harry looked up at her, finally realizing what she was on about. "Yes."
"That's insane!" She turned on her heel and walked back into the house. Harry could hear an edge in her voice and decided to run in after her.
Aunt Petunia just arrived back home with bags and bags of new clothing, chattering excited about everything she got for Mina. Uncle Vernon was watching TV with Dudley when Mina raced into the room.
"Why does it say Minante Potter?" she asked loudly.
"What?" Uncle Vernon knew what she was talking about and tried to ignore her.
"The letters that you keep burning. Why do they say Minante Potter?"
"It's just a misprint, Babydoll."
"It was handwritten!" she countered.
"It just looked that way."
"Stop lying to me!" she yelled. "Tell me now."
"Minante you will not speak to us…" Uncle Vernon tried to be stern but Mina rounded on him. She honestly looked scary as she stared him down. Her pretty baby doll features looked more like that from horror movies.
"I'm a Potter, aren't I? I'm related to him?" she said without looking at Harry. She didn't give anyone a chance to reply. "I look like him. Almost identical." And then she started listing things that they had had in common over the years. Aunt Petunia eventually seemed to drop her façade.
"Yes." she said with a tight lip. "You're Harry's twin sister. Are you happy now?"
Harry was shocked. The evil twin sister was his.
Harry felt the room change as Mina turned on Aunt Petunia. "Am I happy now?" she repeated the question. The room felt unusually cold as Mina stared at Aunt Petunia. Everyone jumped when Mina started laughing hysterically. She shook her head and turned to the door.
"My whole life is a lie." She said between laughs and ran out of the house.
