Do I think some things that happen in this chapter would actually fly at Hogwarts? Maybe not, but then again this is the school that had a three headed dog that could kill people just. Casually in room. The school with a murder forest. The school with a giant snake in the basement. I think letting a prince hang out and cut off his limbs for science would fit right in.

When Edward woke up, he noticed a few sensations. Firstly, his port was aching like a bitch and he'd have to hop down by the hospital wing before breakfast. Second, that whatever pillow he was using was very warm, smooth but hard. Thirdly, that someone was playing with his hair. He groaned and opened his eyes only to be met with naked chest. He lifted his head and the other grinned.

"Morning Ed! Is it time for breakfast?" Ling asked with a large grin. "Because I'm really hungry."

"Is food all you think about?" Edward asked with a roll of his eyes. He sat up and stretched.

"No. I think about being Emperor. I think about you. Currently I'm thinking you should wear your hair down more." Ling said leaning on his hand. "Greed agrees."

"Hmm." Edward shrugged and started to get dressed. "I'll have to explain to my boss that you just showed up out of nowhere. You might have to leave so be ready for that. Also. You're Ling Yao, prince of Xing no matter who's in control. I don't need to explain the whole homunculus sharing body thing ok?"

"Sure thing." Ling said putting his hair up "Lan Fan, you sleep ok?" A metal thumbs up came from the couch. "Good. Can't have you getting hurt from bad sleeping arrangements."

"I'll have to write Al that you two are ok. He and Mei went back to the capital and are currently looking for you- I'll do it over food." Ed sighed putting his shoes on, this time consciously not putting his hair up. Only brushing it. "I gotta think up an excuse for you showing up..." Edward mumbled.

"Well. I could just say I was passing through and wanted to see you for a few days. Because I do want to explore this country a bit. The idea of a whole new world is amazing. I'll study and explore in the name of Xing while waiting for the Emperor to kick the bucket."

"Don't you need to be there for that?"

"Nah. I'm already named the heir. I have supporters and junk. And if I go back and some other punk is emperor, well. I don't think Greed would allow it." he shrugged

"How is the emperor doing anyway?"

"Frightfully well." he said "Now let's get some grub!"

"Sure. But let me talk to the headmaster before you come charging in and eating this place out of house and home." Ed said leading the way with a slight limp.

"You ok?"

"Stump pain. I'll get it fixed later." Edward dismissed him. He led the way to the great hall but had Ling outside. He strolled right up to the front table, ignoring stares from girls all giggling about his hair.

"Good morning Professor Elric." Dumbledore said

"Morning. Listen, I got a small favor to ask." Edward said "I had a friend show up this morning- very sudden asshole didn't say he was coming... anyway he's just making a pit stop before heading off to explore for a bit. Should I kick him out and send him to Hogsmeade or can he just stay in my quarters. Hell if he does... I could use him for a lesson."

"Is he also an Alchemist?" Dumbledore asked.

"Nope. He's a product of Alchemy that I could show the older students."

"Oh? He sounds fascinating." Dumbledore said "I'd love to meet him. And yes, Hogwarts would love to play host to your friend for a short time. As long as he helps you in your class."

"Awesome. You'll have to do that little translation thing. I'll grab him." Ed said walking right back down the tables and pulled Ling inside.

"Food." He groaned in Amestrian. "Ed that all looks really good."

"Quit whining." Edward snapped.

As the approached the table, Dumbledore pulled out his wand and first conjured a chair for Ling, then cast one on him so he could speak. Ling stood dumbstruck for a moment then grinned.

"Well look at that." he said with a grin "English."

" English indeed." Dumbledore said "Welcome to Hogwarts. I am headmaster, Albus Dumbledore."

" Nice to meet you. I'm Prince Ling Yao of Xing." he held out his hand. The other teachers looked to each other. A prince?

"A pleasure. I hope you enjoy your stay."

Ling grinned, eyeing Dumbledore's wand. Greed practically purred.

000

Edward had decided just what Ling and Greed could help him with. However, it could get quite graphic so he decided perhaps only 5th years and up should see. Edward sat on his desk as his 5th years all came into the classroom. The 5th year class was entirely too small. It only had 6 students. One from each house, and the Weasley Twins, both of whom were trouble makers at first but after Edward nearly punched one of them before calming and showing them some cool Alchemy, they buckled down and proved they could be decent Alchemists. Greed stood next to Ed, smirking as the students arrived.

"Could have sworn you'd be more popular by the way the female students look at you." Greed whispered to Edward in Amestrian.

"It used to be full. I kicked most of them out."

"You're such a hard ass teacher. Kinda hot."

"Wow Professor. " George Weasley began "You let your hair down."

"Finally loosening up?" Fred asked "Let's celebrate. "

"Sit down and shut up." Ed said with a grin. They were the last to join "Before we begin this is my friend Ling Yao. He's gonna be helping us today."

"Hello there." Ling said slipping into control.

"In class the other day we started talking about atoms and atom parts. Who can tell me the parts of the atom?" Edward asked "Okay Davies, shoot."

"Proton, Neutron, and Electron." Rodger Davies said

"Good. 5 points to the blue team."

"Ravenclaw..." Davies mumbled knowing it would be no use.

"Alright now remember ions? When the number of electrons differs from the norm this creates different types of that element. Then isotopes are when the neutrons vary making different types of the element. Normally different hardness between ions. And that is the case in today's element carbon. Carbon is a special element and who can tell me why?" Edward sighs "What is it Weasley."

"Carbon is special because it got asked out by oxygen the most popular element and now all the other elements are jealous."

"Carbon is special" Edward said ignoring the answer while Ling. Or Greed? Who knows, one of them laughed. "Because all living things are made up of carbon. A lot of carbon. And carbon has a lot of ions in different degrees of hardness. In fact, it can be one of the hardest materials on earth. It's what diamonds are made of. But it can also be soft and crumble. As alchemists we can change an element into a different ion or isotope. That's what I'm going to show you today."

"Then why if your friend here?" Adrian Pucey asked.

"Because Ling has a special alchemical... ability. I won't explain it and neither will he just know he can do this." Edward looked to Ling who grinned and threw up his ultimate shield, covering his body in black carbon. "This is his carbon shield. It's hard as shit."

"That's amazing." Cedric Digory said softly.

"I know. I'm awesome." Greed said after taking control.

"How do we know it's actually hard?" Angelina Johnson asked.

"Let me show you." Edward said clapping his hands together and pulling a large ax out of the floor. "Pick a body part."

Greed held out his arm before stopping and rolling the sleeve up. "I like this coat." Edward rolled his eyes before pulling the ax back and giving a good swing down on Greed's arm. It bounced back and nearly sent Edward back if not for his own reflexes and Greed wrapping an arm around him.

The students looked impressed and all made some sort of excited noise. Ed blushed dusting himself off

"Hard as shit." He said "But we can change that with a simple transmutation." he set the ax down and clapped his hands and placed them on Greed's arm "Simply change the hardness and his shield is as good as useless. Let's try this whole ax thing again, I'd look away if you're squeamish." he lifted the ax up.

"Professor don't!" a few shouted. Greed grinned as Ed slammed the ax down. Cutting his hand clean off.

"Owe." Greed said, before laughing "Shit you all look hilarious." he ignore the pain and he regenerated his hand, the other turning to dust "I'm glad you are so concerned for my safety."

"Blimey..." one twin mumbled

"How did he do that?"

" Don't ask." Both Edward and Greed replied. "But we all won't forget carbon and its hardness any time soon huh?"

000

The next day at breakfast many students came up to him and Ling asking more questions about Ling's powers. Edward smoothed them all over, without giving anything away. As they ate, several letters were dropped on his plate. He opened the first from Winry, smelling again for her perfume. He blushed darkly, it was his favorite kind.

Dear Edward,

I should have your winter automail ready by the end of the month. I'm still waiting on the last metal shipment from Briggs. If the pain gets worse a warm wet towel and a massage will do the trick to relieve temporarily.

Greed is back? As in the Greed you fooled around with in the woods a bunch before the Promised day? As in the Greed that we well... You know what happened that last night we saw each other before then. Have you guys done anything? Please tell in graphic detail.

Edward nearly spat out his coffee. Winry was definitely a pervert in bed... He kept reading.

Anyway, hopefully I'll see you soon! I miss you so much.

Love Winry.

"In graphic detail huh?" Ling asked reading over his shoulder before chuckling. "You two are so cute it makes me sick."

"Jealous?" Edward asked

"Yeah. Actually."

He smirked before opening the second letter from Mustang.

Fullmetal

Greed the Homunculus is back? Interesting... I know he was our ally in the promise day, but I'm not about to forget he nearly took over for Father and swallowed the country up himself. Keep an eye on him.

Mustang.

Edward sighed and moved onto the last letter from Al.

Brother,

I'm glad Ling is okay! Mei and I were getting worried. But Greed is back? I'm not sure how that's possible but... I guess that's a good thing? For you at least. I know you and Greed had something at one point brother but you should still be careful. Anyway, since Mei and I had to postpone our trip to the far east, we're going to head back to Amestris for a while and then maybe we'll stop by your school after the New Year!

~Al

"What is with them...?" Ling asked.

"Will you stop reading over my shoulder?" Edward snapped and sighed "Don't let him take it personally. Their just concerned. But we both know him better than they do."

"I would hope I did.." Ling said "I would hope."