I just came up with the plot a few characters. Everything else is J. K. Rowlings
William hugged his mother as hard as he possibly dared, not wanting to harm his mum. Neither of them could believe that this moment was finally here, he was finally going to Hogwarts - an event that he both really looked forward to and dreaded, Hermione just dreaded it. They had just put Will's luggage in the baggage carriage and the moment just seemed to be getting closer and closer. Hermione's eyes shined with tears as she returned the hug, never wanting to let her precious boy go but unfortunately the ten minute warning whistle was blown and she had to tear herself away.
"Have you got everything?" She asked, trying to keep the tears in her eyes.
"Ye-"
"If you've found that you have left something at home, let me know and I'll owl it to you as soon I can. Don't want you to-"
"Mum, I'll be fine."
"I know." She sniffed. "I just- I want everything to go fantastically for you." She looked him over, as if she were trying to find any injuries when really she just wanted to reassure herself that he would be okay. He was a little bit taller than average for an eleven year old, with a skinny frame but he couldn't quite be seen as gangly. She looked into caramel eyes so similar to her own; they too held the undeniable look of a thirst for knowledge that she still has to this day. A stray strand of smooth brown hair fell into his face prompting her to tuck it behind his ear, a habit she'd developed when he insisted on having hair down to his shoulders when he was six.
"And it will." He smiled at her, before turning to Ginny and Harry who were saying goodbyes to James. James was currently trying to get his mother to stop kissing him, Albus and Lily laughing hysterically at his embarrassment - not realising that they would go through the exact same treatment when it was their turn to brave the halls of Hogwarts. "Goodbye Uncle Harry." He whispered as he gave him a rather large hug. "Look after Mum for me please, I don't think she'll take me leaving very well."
"I'll look after her," Harry promised, "But I need you to do the same thing for James, Will." Will nodded.
No sooner had he stepped back from the hug was he tackled by Ginny, who then started attacking him with her kisses, not wanting to let him go anymore than Hermione did as he was like a third son to her. "Keep yourself safe, Will." She said when she finally released him, allowing Albus and Lily to then say goodbye and give him a quick hug.
Ron crouched down put his hands on both James's and Will's shoulders. "Listen here you two, I heard that the Malfoy kid is also starting school today and I don't want to hear of the two of you making friends with that lot, alright?" James nodded eagerly, always wanting to impress his Godfather. Will didn't respond and his face gave away no emotion, he'd like to figure out what sort of kids he wanted to become friends with by himself thank you very much.
"Ron!" Hermione exclaimed exasperatedly before swiping the back of his head with her hand.
Ron ignored her and pulled the two boys into a hug. "Look after yourselves."
Another whistle sounded, signalling five minutes until the train departed. Hermione shrieked, and a few tears managed to escape. "No, no, no, no, no." She cried, trying to control her breathing and not make an absolute scene. She pulled Will out of Ron's grip and gave him a bear hug. "Remember to look after Inky," She glanced over at a black kitten who had just jumped onto and was currently perched on Harry's head, looking very imperious and blending in rather well with his hair, "And don't forget to write to me everyday, I want to know everything." She let go of him and kissed his forehead. "I love you William and I'm going to miss you very very much."
"I love you too, Mum." His eyes quickly flashing to grey and back, alerting Hermione that he was just as nervous as she was.
"You'll be fine." She gave him another quick hug before she picked Inky off Harry's head and handed her to Will whose uniform, money and books for the train journey were packed in the schoolbag hanging off one of his shoulders – Hermione had very helpfully cast an undetectable extension charm on it hoping that it would make going to classes much easier. "Now you'd better get on that train before it goes off," She announced, starting towards the nearest carriage door which James quite happily jumped onto without another word to his parents.
The one minute whistle blew and Will stepped onto the train as well, muttering a quiet goodbye to everyone. Hermione seemed to remember she still had things to tell him so she walked along the platform following his steps inside the train as he went in search of the compartment Teddy, Victoire, Fred II and now James were in.
"Make sure you keep out of trouble," She said loudly to make sure he heard her, "Don't let James drag you into anything!"
"What makes you think it'll be my son who drags him into trouble?" Harry asked indignantly, Hermione just shot him a look, which was all he needed. "Fair point." He muttered.
Hermione turned her attention back to telling Will a few last minute things. Hermione opened her mouth to speak but the sound of the final whistle interrupted and the great steam train lurched forwards before moving at a constant acceleration, Hermione started to run with the train. "Don't let James get expelled OR WORSE GET YOURSELF EXPELLED!" She shouted after it.
Will chuckled when he heard his mother's last sentence and decided to forgo finding the others in favour of leaning out of the open window of the Hogwarts Express to wave to his mother. He spotted the petite figure of his mother waving madly at him through the sea of other hands that were waving from the Hogwarts Express, she had tears running freely down her cheeks; Ginny seemed to be suffering the same fate as Harry was trying to comfort his wife. Ron was waving from behind the three of them, Will could see him glance at Hermione in concern when he noticed the waterfall of tears but continued to wave goodbye. Will was sure that the others would comfort Hermione as soon as they were out of sight, knowing that his Mum would be annoyed if she'd been distracted whilst Will was still in view. As the figures on the platform got smaller and smaller and the crowd dwindled down Will's eyes burned with tears as well but he prevented them from falling by convincing himself he was going to be fine – in reality it was the picture of his mother being a mess that caused his heart to ache. At first he'd found it mildly alarming that the normally so composed Hermione Granger was crying every five seconds during the build up of preparing him for Hogwarts, it wasn't so alarming now but it still made him want to go up and comfort her, this time however he wasn't able to.
When the platform was finally completely out of sight, he brought his torso back into the train and closed the window as he realised he should probably go in search of the others. He didn't have to search for very long though as James bounded along the corridor.
"Will! Where have you been?" He exclaimed when he saw him, Will opened his mouth to reply but James continued. "Follow me, we're in a cabin with Freddy, Vicky and Teddy." They walked into the next carriage and entered the first compartment.
"Hi Will." Everyone greeted as soon as they saw him. In the cabin sat Teddy Lupin who was now starting his fourth year in Hufflepuff, his hair currently a spiky arrangement of really dark blue (almost black). On the other side of him sat Victoire Weasley who was almost the spitting image of her mother and had been sorted into Ravenclaw the year before in her first year, opposite her sat Fred Weasley II – a fellow first year - he currently had a notepad out and was brainstorming everything from ideas for his father's shop to pranks he and James were going to pull on the school.
"Hi guys," Will responded as he took his bag off his shoulder to put it on the overhead rails before sitting in the empty space next to Teddy.
Teddy ruffled his hair. "We were worried about you buddy, thought you hadn't got on the train for a second."
Victoire nodded in agreement, "Are you alright?" She asked.
"I'm fine now, but I'm sure it'll overwhelm me at some point." He replied quietly.
"It's not going to overwhelm me!" James pointed proudly at his chest, "I'm going to be perfectly fine and I won't miss my parents once. It'll be nice to be away from my annoying brother and sister, Hogwarts is going to be a walk in the park." He put his arms behind his head and relaxed into the seat.
Victoire sent James disbelieving looks before she leaned in to whisper something in Teddy's ear. Teddy grinned and held out his hand for Victoire to shake. "You're on." He whispered in reply.
They sat there for a good half an hour chatting about this and that - James, Fred and Will asking the two older children everything about Hogwarts – before Will suddenly gasped in alarm.
"Inky!" He said as his eyes went wide when he realised he had no idea where the cat was.
"Bugger…" James mumbled.
"Don't worry Bud, Inky will still be on the train. Where was the last place you saw her?" Teddy asked, putting a reassuring hand on his back as Will slumped forward with his head in his hands, worrying about his cat.
"I put her down when I leaned out the window to wave goodbye to Mum." He said glumly. "We were still next to the platform and the train was still moving pretty slowly… It's completely possible that she jumped from the train onto the platform."
"She's a smart cat Will, it's pretty unlikely that she'd have done that." He paused. "Look the best thing for you to do is to go out and look for her; I'll help you look for her." He stood up and headed towards the door, which Victoire was already leaning against – ready to open and help look for Inky. James and Fred opted for staying inside the cabin in case someone decided to take it over or in case Inky made her way over. The three of the them decided to split up, Will went right heading towards the back of the train was and the other two headed left to the front of the train where there were also more carriages to cover.