1 The Hidden Barrier of King's Cross

Judy Granger parked in a spot right next to a newly bought car. Hermione and Lilly came out of the car and was followed by Remus and their mom. From the other car, a boy with messy hair and glasses came out. He walked to the back of the car and opened the trunk. He hauled out a trunk like Hermione and Lilly's, and then took out an owl cage. He closed the trunk and hit it lightly. He moved out of the way and the car backed out of the lot.

The boy turned around and said, "Hermione!"

"Harry!" Hermione answered as she gave her best friend a hug. Hermione turned around to introduce her sister, but instead found a star-struck girl. She nudged Lilly and brought her in front of her.

"Harry, I would like you to meet my sister, Lillian Judith Black." Hermione said.

"Black?" Harry asked curiously, "Is she Sirius' daughter?" Hermione and Lilly nodded. "Wow, she looks like Malfoy's mom though."

"That's because my mom is Malfoy's mom." Lilly said. Harry looked at Hermione in shock. She just simply nodded and followed her mother and Remus into the train station.

Remus had gotten carts for the kids while Harry was asking Lilly and Hermione questions why and stuff.

"Here are your trunks." Remus said making Harry jump. Lilly giggled and was soon joined by Hermione. The adults loaded the kids' stuff onto the carts and Harry finally noticed him.

"Professor Lupin?" Harry asked, astounded by his sudden appearance, "When did you get here?"

"I was always here, you just hadn't noticed." He replied simply before turning back to loading the carts. He showed Harry his cart, then Hermione her cart, and finally showed Lilly her cart and helped her push it.

The five people walked to the barrier and stopped there.

"Why are we here?" Lilly's small voice asked.

"This is the entrance to Platform 9 ¾ Lilly!" Hermione told her. Harry went first, Hermione and Lilly second, and Judy and Remus last.

"Draco!" Lilly shouted as she spotted her older brother coming towards them. She abandoned her cart and ran to him. Hermione pushed her cart along with her own to Draco. She finally spotted him hugging her. A train dwarf came along and took Hermione and Lilly's stuff to load into the Hogwarts Express.

Hermione walked to Draco and stopped in front of him. She smiled at him, the brotherly Draco that she knew. He smiled back at her and opened his free arm. Hermione walked into it and hugged him and surprisingly, he hugged her back. "I don't really care now because we're closer, thanks to Lilly here." He gave the young girl a noogie.

"So, did big brother Draco make prefect?" she asked as he put each arm over each girl's shoulders.

"Of course! You didn't think I would did you?" He answered, "I have your birthday gifts in the train, in my compartment. I'll give them to you later." He smiled.

A red head and a messy haired raven head came into view.

"Harry, Ron! Over here!" Hermione yelled to her friends. She saw their hands wave in the air and soon disappeared. The two boys soon appeared in front of Hermione with surprised and disgusted looks on their faces. Lilly looked at her older siblings for any explanation, but got nothing.

"Hey guys!" Hermione greeted them.

"Potter, Weasley." Draco said nodding at both of them. Hermione and Draco brought Lilly into the middle and said, "This is our little sister, Lilly!" The three of them laughed, receiving looks from Harry and Ron.

"How is she your sister and your sister?" Ron asked as he scratched his head.

"Uh…you see, my mom had an affair with Sirius Black and they had her." Draco started.

"His mom couldn't take her home because Lucius never knew the she was pregnant because of a charm." Hermione added.

"She and her mom came, it was Hermione's birthday. Lilly was then born, so she has the same birthday as Hermione." Draco explained.

"Then, since his mom couldn't take her, she asked my mom to and my mom said yes." Hermione stated.

"And that's why she's our sister!" They ended together.

"Oh!" Harry and Ron said.

"DRACO!" A shrill voice screeched.

"Oh no!" the four fifteen-year-olds said.

"Pansy! How did you find me?" Draco asked the blonde witch. (A/N: She truly is a witch, inside and outside!)

"I looked for a streak of light!" She said, "Ooh, who is this pretty little lady?" Pansy asked as she bent down to face Lilly.

"Oh, that's Lilly," Hermione said, "OUR sister."

Pansy noticed where Draco's arms were, "Eww, Draco! Why are you touching the dirty Mudblood?" Pansy shrieked.

"She's not a…what you said she was!" Draco started.

"Uh…Draco, what's a Mudblood?" Lilly asked.

"See what you did, Pansy? You're corrupting the child with that language of yours!" Draco said angrily. With that, he stomped off, arms still on the girls shoulders.