Ages: James is five. Albus is four. Lily is two.
Disclaimer: I do not own Harry Potter or anything else you recognize.
Andromeda and Teddy arrived on the lawn of the Potter's house with a faint pop. Almost immediately, they saw a small boy with dark hair running as fast as his little legs could carry him.
"Teddy!" the boy shouted, throwing himself into Teddy's waiting arms.
"Hey, James," he replied with a grin, ruffling the young boy's hair. The door to the house opened revealing Harry, holding a small girl with hair as red as her mum's. He set Lily down, who then scurried to find her mother, and hugged Andromeda first, then Teddy.
"Happy 12th!" he exclaimed, ruffling his hair like Teddy had done to James. "You better get inside, the kids have been waiting for you to open your presents." Teddy rushed inside eagerly, scoping for his gifts. This was another perk of being a part of such a large family: there were tons of presents. Inside he spotted a large number of redheads sitting around the fireplace and hastened to join them.
"So how old are you now, Teddy? 105 or 106? I can never remember," his Uncle George said.
"I'm 12," Teddy huffed, putting his hands on his hips. George let out a low whistle.
"Geez, you'll be sprouting gray hairs any second now!" The family gave an appreciative laugh. Soon, Grandmum Weasley swooped in holding a large cake lit with 12 candles, Teddy counted. She laid it on the table, Aunt Hermione turned off the lights, and the family began to sing.
Teddy took a deep breath and blew out all of the candles in one breath, nearly spitting at the end. He made the same wish he had made every year. 'I wish I could meet my parents,' he thought sadly. But before Teddy could brood for too long, he was swept away into opening presents. He received large amounts of candy from Honeydukes and merchandise from Uncle George's shop. There was some new spellbooks, new clothes (both Muggle and Wizarding), and his own broomstick-servicing kit. Teddy was extremely grateful and made sure the Weasleys knew (although he did have to be reminded by his Gran sometimes).
But all too soon it was over. All the Weasleys returned to their own homes, and Teddy soon went upstairs to brush his teeth to get ready for sleep. He was sleeping over at the Potters for his birthday. But just as soon as Teddy began to get comfortable in his bed, there was a knock on the door and Harry entered. Teddy turned on the lamp and noticed his godfather was holding a wrapped package. More presents? He sat up eagerly.
"Hello, Harry." For some reason, to Teddy, Harry was just Harry. He named Aunt Ginny, her brothers, and their wives as his uncles and aunts, but Harry was never "Uncle Harry" to him. Just Harry.
"I've brought you something extra. I didn't want you to open it in front of the rest of the family," Harry said, putting the package into Teddy's hands and sitting on the bed. Teddy stared at Harry curiously before ripping away the wrapping paper. Inside lay a portrait of a familiar pink-haired woman holding the hand of a sandy-haired man. Teddy gasped. It was his mother and father.
"Wotcher, Teddy," said the depiction of his mother, winking, though she seemed teary-eyed. Teddy was not attempting to hold back tears, however, as he leaned up close to the painting, trying to get as close to his family as possible.
"Mum? Dad?"
Harry, watching the scene, was eerily reminded of his first meeting of his parents through the Mirror of Erised. He put a hand on his godson's shoulder in support.
"We are very proud of you, son," said Remus, putting an arm around his wife and smiling up at Teddy. Harry decided to leave Teddy alone with his parents. He got up to go, before a small hand grasped his arm. Teddy lay the portrait to the side, before throwing his arms around Harry.
"Thank you," he gasped, trying to put a lot of his gratitude into the hug. Harry seemed to understand and he ruffled Teddy's turquoise hair.
"You're welcome, Teddy. Happy 12th." With that, Harry left the room.
Teddy came down the stairs the next morning looking tired, but very happy. Harry put down his coffee mug and turned to him.
"Hey, kiddo. Stay up late last night?"
"I stayed up all night talking to them. They told me that the miss me and that they love me. My mum and dad said that, Harry. Can you believe it?" Teddy's eyes welled up, and he rubbed them under the pretense of rubbing the sleep from his eyes. "This is the best birthday present I've ever gotten." Harry smiled sadly. He knew that all Teddy had were pictures and stories of his mother and father. But being able to talk and interact with them was an invaluable present, and Harry knew Teddy would treasure it very much, just like he would have.
"I'm glad you like it."