The next morning Danny woke up to shouting. Mrs Black's painting was screaming insults and Mrs Weasley was shouting, by the sounds of it at Fred and George. Danny groaned and rolled out of bed. He got dressed and ventured downstairs. No one bothered to stop Mrs Black's painting. Danny walked into the kitchen to find Lupin drinking a cup of tea, the twins swallowing a quick breakfast and Mrs Weasley healing a fading bruise on Ginny's cheek. Danny raised an eyebrow. Lupin caught his eye.

"Accident with a bewitched trunk. Don't ask," Lupin explained softly as Danny grabbed some breakfast for himself. Danny scowled at the twins.

"I've said it before, I'll say it again. You're idiots," Danny muttered to them.

"We thought the stairs were clear," Fred mumbled.

Danny rolled his eyes and rubbed his head.

"That painting is giving me a headache. How far is King's cross?" Danny asked.

"Twenty minute walk," Lupin answered. Danny glanced at the clock and frown it was already half ten. Thankfully he didn't have lessons that day, from September on, Dumbledore would organise lesson days a week at a time.

"Cutting it close," Danny pointed out.

"Podmore hasn't arrived yet. Moody wants to wait until they have the entire guard but if he isn't here in the next few minutes," Lupin explained, trailing off with a shrug.

"I could fill in," Danny offered. Lupin shook his head.

"You're meant to be heading to your new residence when we leave, remember?" Lupin reminded the halfa. Dumbledore had already told Danny that he'd be moving to Hogwarts as Phantom as soon as term started.

"New residence?" George repeated as Ginny ran off to collect her trunk in her room.

"You're not staying here?" Fred asked. Danny shook his head.

"Nah, Dumbledore is finally getting me to work. While you two are stuck in school getting detentions, I'll be off running errands for the order," Danny teased. Fred and George frowned.

"We don't get detention. We hardly ever get caught," George grumbled. Danny chuckled.

Minutes later Mrs Weasley ran into the kitchen, grabbed a bundle of toast and shoved it into Ron and Harry's hands. Danny followed the others out into the hall and frowned as Sirius the dog, having learnt of Sirius's animagus status, ran over to Harry. After a brief refusal, Mrs Weasley gave up.

"See you, have a great year!" Danny called as he went upstairs to grab a few things from his room and collect his thermos, still hidden in what used to be Danny's mattress but was now Harry's. He returned downstairs, the painting still screaming. He yanked the curtains closed.

"My ghostly wail isn't even that loud," Danny complained to himself. His belongings packed, Danny left the house and teleported to his room in Hogwarts.

He quickly unpacked and then phased out of the room and flew to Dumbledore's office to report in. He then explored the castle, nodding to the teachers he saw, having already been introduced to the staff, bar Umbridge, the previous weekend, and smirked at McGonagall and Snape. He caught up with Sir Nick and some of the other ghosts. He had met Peeves briefly, but the poltergeist generally avoided the halfa. That evening, the students arrived. Danny phased into the Great Hall invisibly and watched the sorting before floating down through the floor to the kitchens for dinner. He returned to his room that night, finding the door to the classroom locked for him already. The classroom had been cleaned also by the house elves.

Danny overslept the next morning and went to get his breakfast in the kitchens near lunchtime. He then, as requested by Dumbledore, reported to the wizard.

"Good morning, I see you overslept," Dumbledore greeted the halfa warmly. Danny blushed in his ghost form, having only turned visible in the kitchens and office.

"Sorry, I'll try to not let it happen again," he apologised embarrassed. Dumbledore smiled.

"It's fine. Thank you for coming," Dumbledore replied. Danny nodded.

"Now, you're welcome to allow students to see you. I only ask that you don't intrude on lessons and try to not let Dolores Umbridge see you. She mightn't take kindly to your presence. While here, I'd like you to resume watching over Harry for me. If you see anything odd, please alert me to it. Remember, while at Hogwarts, I want you to wear the uniform. Have you chosen which house you want to be in?" Dumbledore told the halfa. Danny bit his lip, having completely forgotten that last order.

"Er, honestly… I forgot. But I don't think I want to be in Gryffindor. Even though I might fit in that house, it might be too much of a clue. Doubt I could pass off being a Ravenclaw. So it's either Slytherin or Hufflepuff," Danny thought out loud.

"If I may make a suggestion, being a Slytherin, may draw more attention than the other houses. The house isn't well liked. As much as I dislike the divide, it is present," Dumbledore warned. Danny nodded.

"Guess I'll be a Hufflepuff then," Danny concluded. Dumbledore smiled.

"I have a copy of Harry's timetable for you in order for you to check in on him. I ask that you observe his Defence Against the Dark Arts lesson this afternoon. Do not under any circumstance interfere. After that it is your choice how you spend your time but I do want regular updates on how Harry is faring. For this week, you have no lessons with Miss Fisher, but next week, you have lessons on Tuesday evening five until nine and Friday, same times. Guard duty for the prophecy on Saturday night. Any questions?" Dumbledore informed the halfa.

Danny took the timetable and shook his head.

"Can I get my own schedule written for me though, so I can refer to it," Danny requested. Dumbledore nodded. Danny smiled and left shortly afterwards. Danny glanced down at the timetable before frowning at the school crest at the top. He groaned. A badger. The houses obviously had animal mascots. Ravenclaw clearly had the bird. Slytherin just had to be the snake, it sounded like one already. And lions were brave, like Gryffindor.

"If Vlad ever hears about this, I will never live it down," Danny mumbled, he really should have checked the crest first. Little badger, Vlad's pet name for Danny, was infuriately true now.

Shaking off his irritation, Danny floated down to the dungeons where Harry had potions. He arrived near the end, right when Snape cleaned out Harry's cauldron for forgetting an ingredient. Danny scowled at the strict teacher. He'd seen Sirius and Snape's hatred for each other. Could that dislike have transferred to Sirius's godson? If he spotted this behaviour again, he'd bring it up with Dumbledore. Danny watched helplessly as Harry angrily cleared away his things while the others scooped out samples of their potions for grading. The halfa followed the trio as they walked to the Great Hall for lunch, eavesdropping on their conversation. Danny frowned as he heard the potions master had acted that way towards Harry before this year.

However, unexpectedly, Harry snapped at his friends and stomped off. Danny raised an eyebrow. He glanced at Ron and Hermione, who were stunned by their friend's actions. Danny flew after Harry, finding him battling through the crowds heading towards the seventh floor. Danny bit his lip. He wanted to see if Harry was just annoyed at his friends due to them being prefects, or if the young wizard was just in a bad mood because of Snape. Spotting Sir Nick, Danny smirked. He always wanted to be a tourist.

He raced over to Sir Nick as he phased through a wall.

"Sir Nick! Mind introducing me to a student? Pretend I've only been here for a day," Danny requested, turning visible in the empty classroom. Most of the Hogwarts ghosts respected and obeyed the halfa. If he wanted to know where something was, he need only ask and he'd get a guide.

"Sure. Who?" Sir Nick agreed instantly.

"Harry Potter. You just missed him in the hall," Danny answered.

Sir Nick phased back through the wall, Danny following while visible.

"This way, oh! Harry! Harry, I'd like to introduce someone!" the Gryffindor ghost called to the fuming wizard. Harry sighed and turned to the ghost.

"Hey Nick. What's up?" Harry greeted in a bored, disinterested tone.

"Harry, this is Danny Phantom. He's staying at Hogwarts," Sir Nick began, giving Danny the opening. Danny floated closer and grinned at the wizard.

"Wow, Harry Potter! The Boy Who Lived. Never thought I'd meet you here. Glad I came to visit!" Danny exclaimed happily, hating himself for pulling the "you're famous" card but he wanted to interact with the teen, impossible if Harry just wanted to go and sulk.

Harry blinked and turned to Danny and frowned in confusion.

"You have colour?" Harry pointed out. Danny laughed.

"Yep. Not normally the first thing mentioned when people meet me," Danny remarked good-naturedly.

"S-sorry," Harry quickly replied. Danny smirked and shook his head.

"Don't worry about it. But why are you alone?" Danny retorted, looking around at the otherwise empty corridor. Harry sighed.

"I… I just wanted to be. Sorry, I didn't catch your name," Harry answered.

"Danny Phantom, or just Phantom, or Danny, whatever you like. Just not Inviso-Bill," Danny listed cheerfully.

"Inviso-Bill?" Harry repeated. Danny grimaced.

"Yeah, don't ask how I got that nickname. Took ages to get everyone to stop using it," Danny confirmed. Harry gave a small smile.

"Well, I'll let you get on. Sir Nick, didn't you say there was an Astronomy Tower here?" Danny concluded. He'd introduced himself and decided that Harry was just having a bad day. Harry waved as the ghosts floated away. Harry's thoughts darkened again as he returned to his trek to Divination. Danny thanked Sir Nick, having gotten into the habit of calling the ghost as such. Danny then followed after Harry to Divination invisibly. The wizard sulked for the entire break and entered the classroom first. Danny was almost shocked into visibility by the stuffy, perfumed room. The woman, Trelawney Danny recalled, wore numerous shawls and had large insect-like eyes. Danny quickly decided that he'd check how the teacher behaved around Harry and see what the subject was before escaping the room.

So Harry has met Danny Phantom! But he doesn't realise just yet the importance of it...

And Danny will be wearing Hufflepuff uniform on his human half while at Hogwarts.

Let me know what you guys think so far of the story.

Until the next chapter.