I... Have no words to describe how surprised I am that this is so popular... or even how sorry I am for taking so freaking long for this... Sadly I can not confirm if I will ever be able to make a chapter three or intermission chapter anytime soon... mostly due to life getting in the way and many other stories I'm working on... To be completely honest I'm just surprised I even wrote this much for it. I was mostly just thinking of a prompt idea to help add more diversity to the crossover of these two series... I never intended to make this an actual story but hey I did...

Again I'm very sorry for the long wait and I apologize again for not being able to update this often.

Chapter 2: Singing Hats, Annoying Cats

Harry was a little bit annoyed. First off this Ron kid asked about his stupid scar after he told him who he was… Harry had to question which one at first before realizing it was the lightning bolt one upon his forehead. He did show it off but said he had a cooler one on his left arm from when his training with his family got a little too rough. Greed practically blew up at the others about it… Mostly Envy since they had been the one who pushed it so far.

Speaking of the sin, Envy was laying on the seat next to Harry and practically rolling his eyes at the story Harry was telling about the scar… as well as the red haired wizard himself. Envy could practically smell the Jealousy from the boy given how the red haired child was clearly wearing hand-me-down robes that didn't quite fit just right, to the simple sandwich and how he seemed to react when Harry paid the Trolley Lady for a few of the sweets and-

Wait a minute he got five chocolate frogs… Brat better save one of those for me! Envy flicked his tail into Harry's side as a subtle reminder to share some of the goods. The raven haired wizard frowned a little down at the disguised homunculus but set one of the packaged frogs down next to him. Envy sent him a manic grin, outside of Ron's view of course, before wrapping his tail around the package. They were gonna save that for when the red haired kid leaves… or passes out.

Sadly for the disguised sin Ron seemed to keep asking up a few more questions… and what really got on Envy's nerves was the fact this kid had a rat.

Where's that rat poison when you need it? Envy thought, a snarl making its way to their face as they stared at the fat rat by the red haired kids side… but took joy it watching it squirm from the small growl that made itself known from their throat.

Wait… that note never said anything about being able to bring a rat… What the hell?

…

A while before the train pulled up to Hogwarts a young bushy haired girl around Harry's age came into the compartment asking the boys if they had seen a Toad some kid named Neville lost. Both boys had denied seeing it and the next comment made both Harry and Envy get a little mad.

"Shouldn't you have that cat in it's carrier? We don't need another lost pet after all."

"Excuse you, but Envy-" Envy sent a small glare to the black haired wizard for using their real name like that. Harry also internally cut himself off from saying anything that could break Envy's disguise. "... doesn't have a carrier. They just snuck into my bag."

Two points for trying brat.

….

With their first glimpse of Hogwarts Harry honestly felt like taking back a few things he said about the school… Envy on the other hand was thinking of all the things they COULD say about it when the two get their time alone. Envy felt like they were going through withdrawals of not tossing out their usual insults.

Not to mention both Envy and Harry were not too keen on their transportation TO the castle… After all with Envy's extra weight they couldn't help but be nervous in the old boats. They both practically held their breath the entire way… well except for when the someone rocked their boat so much that they fell in. Both the homunculus and wizard couldn't help but laugh at it.

"If dad was here he would find this hilarious as well!" Harry laughed in Amestrian, confusing the rest of the people on the boat with him on just what he said.

…

"THE PARASITE IS WHERE?!" To say that Greed was angry was an understatement. He was feeling pissed off, worried and a whole lot of other conflicting emotions.

"I just told you Greed and I'm not explaining everything a second time Greed," Lust sighed as she downed a cup of coffee for her upcoming night shift. She was gonna need it to deal with some of those humans.

Pride just rolled his eyes as he watched the TV they had, ignoring his two younger siblings.

"I get that, what I don't get is WHY THE HELL YOU SENT ENVY TO BE IN A SCHOOL?!" God reflecting a little bit on it, Greed hadn't been this pissed off and worried since the time Harry came back from a summer camp early with a broken arm when he was eight. Lust pinched the bridge of her nose at her younger sibling.

"Harry's school is full of young magical humans, we need to know the clear advantages and disadvantages by seeing it in action rather than from a book. Not only that but this 'Dumbledore' was the one who apparently left Harry on the doorstep of the Dursley's all those years ago."

Now that had Greed subconsciously pulling up his Ultimate shield on his hand as he remembered the night he saw them leaving the child there. It had to have been that elderly wizard with the long ass beard. He wanted to punch that old man in the face so badly for that.

"Don't take your anger out on anything we own Greed," Pride piped up causing both Lust and Greed to glance over to their eldest sibling… who was staring more at the TV then his family… though Greed did check the shadows around them first only to spot no eyes nor creepy grins in any of them.

"How did-" Greed started only for Lust to raise her hand and stop him right there as Pride started to speak again.

"You think I wouldn't know how you work by now Greed?" At Pride's question Lust merely gave Greed a whole "See?" look as she took a sip of her coffee. Greed was heavily confused but basically gave up in trying to question it immediately… it would only lead to a headache after all.

Doesn't mean I still can't worry 'bout my kid… Greed thought to himself, making a mental note to write to Harry and tell him to punch the old wizard in the face next time he sees him… or at least convince Envy to do it… Maybe also convince Harry to punch Envy in the face as a "Hello" from him as an added bonus.

….

The inside of the castle was just as breathtaking as the outside, though Harry and Envy did have to question the floating candles problem… as well as the moving staircases.

"Seems like that was planned by nutcases if you ask me," Envy had whispered to Harry, finally getting some of their pent up insults out and feeling at least a little better. The raven haired wizard had to agree with their sibling on that though… After all, who in the right mind would risk having hot wax drip onto people or risk them getting stuck somewhere, on the stairs, they didn't want to go? Don't even get them started on the risks of someone needing to go somewhere but the stairs changed immediately.

As they approached the great hall Harry and Envy overheard some of the students talking about some kind of test that sorts students into their houses. No two were alike but the mention of fighting trolls from Ron made Envy's fur rise and eyes narrowed into slits.

"Pretty sure a school wouldn't allow that Ron… even though it sounds like a fun initiation," Harry pointed out and could almost start picturing himself fighting a troll. He was so lost in his mind that he missed the glare from the disguised sin or the confused look from the redhead.

Like hell it would be fun ya stupid brat. Envy thought while biting his tongue and flinching back from some kids who tried to pet their head, thinking they was a simple cat and not a "recovered" homicidal, shapeshifting homunculus.

Walking through the halls the group of first years, plus one disguised homunculus, all stood in front of the doors to the Great Hall for the upcoming "Sorting Ceremony" that they, minus said homunculus, would all be going through. Entering into the room both Envy had felt the need to take back some of his more, degrading remarks about Wizards with how impressive the room looked right up to the charmed ceiling… well until Envy also thought about what the point even was when glass and windows existed.

What really made Envy look on with a whole "What the Fuck?" expression on his face was a ratty old looking hat sitting on a stool… and it was singing. Harry seemed to be kinda impressed while Envy was quietly questioning "Why is that even a thing?"

Soon it became a little obvious why it talked when someone was called up for the sorting ceremony and had the hat placed on them for a bit before calling out one of the four house names for everyone to hear. Though, Envy still had to question what the point of it singing was but left it up to strange things Wizards thought up to entertain the kiddies. Finally though it was Harry's turn.

"Potter, Harry." and the whole room went silent for a moment, while Harry blinked, processing the last name of his for a moment before Envy had to nudge him in reminder that's what his real last name was and not "Bradly" as they had been mostly using. Harry stood up and tried to brush off the awkward pause he had for that moment by standing up straight and channeling his best Greed as he made his way up to the stool.

Envy heard the mutterings of the student body about their adopted sibling as Harry walked up to get sorted and was slowly getting more and more annoyed with these mentions of "You-Know-Who" and how they were wondering if he had the scar… Fame for doing something as a child wasn't really the best thing and Envy was half tempted to shout at them to shut the fuck up. Small children and their innocence be damned, Harry said his first curse word at five they could handle it… if they weren't supposed to be undercover.

Lust and Pride owe me big… Envy thought while clenching their jaw shut to keep themself from shouting all the shit they wanted to.

Harry on the other hand was trying to keep himself relaxed as he made his way up to the stool. He could feel all the eyes on him and hear some of the whispering about him, and even though Greed says to relish the attention… Harry was starting to feel like he'd rather hide under the tables and avoid eye contact with how many people were looking at him.

Just as he felt his "Greed mode", as both he and Envy would jokingly call it, starting to slip and wanting to bolt, he felt something small brush past his leg. A signal from Envy, telling him to calm the fuck down and that he was literally right in front of the stool now.

The young wizard sat down and tried to keep his expression aloof… but from the focused eyes of everyone in the Grand Hall on his very being... it really was a struggle. Harry's only comfort was when the hat was placed on his head and how the rim of it covered some of his vision.

And then the voices happened.

"My, my what a peculiar family life I see here." The voice said and Harry was instantly uncomfortable.

I know dad said he once shared a body and technically had voices in his head once… but Jesus this is so weird! How the hell did he put up with it? Harry thought as the voice of the hat prattled on about where to sort him, the young raven haired wizard being uncomfortable the whole time. Envy could see the discomfort of their adopted younger sibling and almost immediately jumped up to bat the hat off of the boy's head. Before they could even do the last part the hat seemed to have finished making its choice and with a loud voice shouted.

"SLYTHERIN!" Harry couldn't get off the stool fast enough, practically dumping Envy off onto the ground with a startled noise and practically sprinted to his table just to avoid the hat as well as try to avoid the many eyes on him.

A few more names got called out after he sat down and some kids at his table seemed to be sizing him up already… but also seemed to be smug about having him there as well, while Envy crawled over to him under the table.

"What the hell was that for ya brat?" Envy hissed quietly, thankfully only Harry really picked it up but still the young boy glanced around the table to make sure no one was paying attention to his conversation with his older sibling figure.

"I had the freaky hat voice in my head for a while there." Harry explained with a grimace

"... Was it screaming like a soul of the damned?" The homunculus quirked a brow, not knowing how bad the whole hat thing was.

"No it was reading my mind." At that even Envy had to grimace with a shudder. That was beyond creepy… and also terrifying to the homunculus if it decided to tell of their real identity and call them out.

….

Settling down for bed wasn't all too bad. Harry just had to throw up some silencing charms (one of his favorite spells he learned) as he closed the hangings around his bed in the shared dorm room he had with his fellow first years. Envy curled at the foot of his bed and kept their head low so people wouldn't see a cat's talking shadow.

"Those charms up?"

"Of course."

"Good because I've got a shit load of things to get out. Starting with the fucking Chocolate frogs!"

This was going to be a long night and Harry was already prepared to quietly just pass out in the middle of his Sibling's rant of all the things they had been keeping pent up since the train.

….

As soon as Harry was fast asleep, Envy listened to the other children sharing the room for a moment before jumping out of the bed as quietly as possible and sneaking out of the room. Once out of said room they changed forms from that of a feline to one of the most generic looking child they could think of with the Slytherin colors going on for the outfit.

Time to work… and to break a few rules in the process. A wicked grin spread on Envy's face as they left the common room, the password for getting back engraved into their memory as they walked the halls.

Envy's first task at the moment was to mentally map out the castle and take into account those moving stairs. (Point number twenty nine of their rant earlier, "What the fuck is with moving stairs?! One wrong step as they're changing and boom recipe for either a dead kid or a lost limb!") They would need to see if there was any pattern to how they changed as well as where the paths would lead.

Easy enough really, just mentally remember the paintings leading up to the room… specifically the moving ones that continued to not make any sense to Envy.

Seriously, either be a fucking ghost, or just be still. There's no need for moving paintings that freak out at your presence like a stupid flea bitten animal. Should have added that to the rant. Envy thought with a huff at seeing some of the mentioned paintings quiver from sensing the tormented souls that naturally made up the homunculus's being.

Walking through the halls after a while Envy slowly just shifted forms back to their preferred appearance after confirming no one would recognize them… or even seemed to be up and about at the moment aside from the paintings… but the homunculus hardly cared at all about them.

Night one and nothing of note…. Fucking great… Envy thought with a deep sigh as they began to walk back to the Slytherin dorms. Retracing the steps they took they only paused at the sound of a loud hiss. Standing not too far away was an almost skeletal looking dust grey cat. It's yellow eyes seemed to glow in the dark and Envy could tell that it's long fur was standing up on end at their mere presence alone.

"Buzz off ya flea bitten bag of bones," Envy snarled at the cat, making it back up a few steps but continue hissing at the androgynous looking sin.

"What's wrong my pet?" A voice called out making Envy quietly curse to themselves and quickly changed forms to that of a black cat once again just as an old man that looked like he just crawled out of a grave to Envy with his pasty face, bulging eyes and sunken in, veiny cheeks. The sin didn't even wait long enough to hear more of this man before hurrying along, thankfully not being followed by the man who clearly thought that they were just a pet that got out somehow.

Note to self for future reference… Avoid the cat, a zombie follows it. Envy marked down for themselves mentally as they got closer to familiar territory.

….

The morning breakfast wasn't as eventful as the first night, though Harry was a little concerned to see Envy looking so tired and pretty much staying in bed until the young wizard finally convinced them to at least get some breakfast.

Harry was glancing over his class schedule as he ate his food, only to nearly choke when he saw there were required flying lessons coming up.

That was not gonna be fun at all for the boy and both he and Envy knew it… even though the sin was still pretty much half asleep at the table.

EDIT, 9/14/2020: Still alive despite the bullshit year and finally got around to fixing a few minor things I found wrong with this chapter. Oh and I've finally got a bit of an idea for an intermission coming up. Also gonna put something important in that so pay attention. Or don't I'm half convinced no one really reads Authors Notes anyways.