Eren Jaeger waited outside King's Cross Station one rainy September morning for his friends Armin and Mikasa. His parents stood next to him, his father, who worked in the Department of mysteries in the Ministry of Magic, was carrying a trunk almost as big as Eren, and his mother, a nurse at St. Mungo's Hospital, carried an angry-looking long-eared owl in a cage. Eren himself was carrying a bulging lunch bag, as well as several textbooks about charms, transfiguration, and potions. He had his potions book open on top of the pile, but the pages were getting wet from the rain, so he closed it. A gray car to match the gray sky pulled up next to them. When it stopped, an Asian girl got out and dragged her trunk out of the back.
"Mikasa!" called Eren, dropping his potions book in a puddle. He swore under his breath. His mother bent down and picked it up, brushing some of the water off.
"Eren, you should be more careful," she reprimanded.
"Sorry," mumbled Eren.
"I'm going to have to leave earlier than I expected for that investigation at work," said Eren's father. "I'm going to have to leave as soon as we get home."
"You're going to make me get used to staying home on my own, now?" asked Eren's mother jokingly.
"Eren wants to be an auror," said Mikasa, breaking into the conversation.
"Eren! Are you sure about this?!" demanded his mother.
"Mikasa! What did I tell you about interrupting?" scolded her mother.
"Sorry, Mom," said Mikasa.
"Yes…" said Eren to his mother.
"Do you know how many people die doing this?" she insisted.
"Yes… I want to find out why wizards shun muggles," explained Eren.
"Tell him that he can't!" Eren's mother ordered Eren's father.
"I cannot tell him to go against his nature," said Eren's father. "I just got a memo from work. I need to go now. Eren, when I get back, I'll show you something my department just invented." He let go of the trunk and disapparated.
Eren and his mother waved. Mikasa and her parents joined them outside the train station to wait for Armin.
A minute or so later, Armin and his grandfather walked out of a nearby restroom, presumably having just apparated inside. Armin smiled at Eren and Mikasa and they met him on the way to the divider between Platform nine and Platform ten. They ran straight through the wall.
A chattering crowd met them on the other side. Owls hooted, cats meowed and hissed, and Eren was sure he could hear a few toads croaking, too. Some people were already in their Hogwarts robes, loading trunks onto the train.
"Where do you want to sit?" Eren hadn't heard his mother coming up behind him. He shrugged.
Mikasa pushed through the crowd towards the back of the train, and Eren and Armin followed her, their parents trailing behind. She found an empty compartment and deposited her luggage under the seat. Eren and Armin followed her, adding their luggage to hers. Their parents handed in the trunks, and they put them under the seat before hugging and saying goodbye until Christmas.
At 11:00, they were settled into their seat. The train jolted and started pulling away. Eren jumped up from his seat and leaned out the window to wave to his mother as she slid out of sight.