A/N: So, here it is my very own version of the ever popular fma harry potter crossover. It's an alternate sixth year in harry potter. As for Fullmetal Alchemist it takes place at the end of the first anime, without the movie. Though I am a huge fan of the manga, so don't be surprised if I throw in a few characteristics from the manga as well. I actually have most of this already written I've just been waiting until I was mostly finished to start posting. Also, Roy didn't lose sight his left eye, he only gained a gnarly scar, and Hughes didn't die, just had a nice coma nap instead.

A/N 2: As far as language goes, I know most people think the Amestrians would speak German, but I'm going with they speak English, reason being, in both the manga and the anime anything written down is always in English (also I really don't want to deal with the German accent, so English it is).

Warnings: This is established Roy/Ed! Don't like don't read. There will be slight Al/Winry also, but really it's barely there. As for the Potter cast I don't have any parings for them, maybe slight hints towards Ron/Hermione, but only if you squint, and tilt your head. Finally there will be spoilers for pretty much all of Harry Potter (but really who hasn't read the whole series by now?) and spoilers for all of the fma anime.

Disclaimer: I don't own either of these fandoms, I'm just playing with them. I also don't own the idea of having Sirius interfering in Ed's quest to get home, I can't remember who first used that plot device or I'd credit.

Wind was ripping through blonde hair with a fierce coldness that caused the young man who was out at this ungodly hour of the night to shiver. The blonde would tell you that his name was Edward Elric, but if someone were to look in to it they would find no record of the man. No birth certificate, no relatives, no social security number not even his name on an old school record. Edward Elric did not exist; well not in this world anyway. His clothing choices were as odd as his non-existence. He was wearing a long red coat with a serpent twining around a cross on the back. His pants and shirt were both black and there were big heavy boots on his feet, and his golden hair was pulled back in long braid down his back.

He was crouching in the middle of a cobble stone street with a piece of chalk in his hand. There was a large circle with intricate designs beneath his feet, but his face and clothes were also covered in the white powder, in the center stood a tall metal rod. Ed finished the last design on the circle and stood up to admire his work. The circle was large enough that it stretched across the entire street, from the very edge of one sidewalk to the other. Ed smiled looking down at it. For the first time in a long while Ed was actually hopeful. If this went the way he thought it would then he would finally be able to leave this foreign world, and return to his own.

All Ed needed to do now was wait for the lightning storm to pick up. He'd found through years of research that the reason for alchemy not working here was the lack on an energy source. Back home the gate had provided a constant source of energy for alchemists to use. Here on the other side of the gate there was no energy source, and he had figured that lightening was as similar to the gate as he was going to find. He worked out the equation that would take him home a year ago. It wasn't simple and it wouldn't be easy nor was he 100 percent certain that it would even work but he felt that the risk of trying outweighed the risk of electrocution.

Ed was waiting for the lightning to strike when he saw a shabby looking man with long hair and torn clothes ambling towards him. Mr. Crazy Ed dubbed him. Mr. Crazy stumbled along the sidewalk stopping and looking down at Ed's circle.

"What is this" Mr. Crazy asked in English, which Ed thought was odd, seeing as they were in Germany, "What are you trying to do?"

"Go home" he answered in English not thinking Mr. Crazy would do anything but stare at him. If he stayed long enough he might even been in for a good show when Ed vanished into thin air…or got electrocuted, entertaining either way Ed figured.

"I want to go home too!" Mr. Crazy yelled and jumped into the circle to latch on to Ed.

"What the hell!" Ed fought with the man trying to get him off. If lightening struck now while Mr. Crazy was clinging to him he'd be screwed, which, of course, he was 30 seconds later when lightning struck the pole and activated the circle. Shit. Ed's only choice was to ignore the man and begin concentrating on where he wanted to go. Or more specifically who he wanted to go to. That's was how he designed the circle to work, to take him where he wanted to go, and since Ed was not positive that his brother was among the living he chose the next person he was closest to: his lover and commanding officer, Roy Mustang.

Ed could feel the alchemic reaction going on around him. He took a deep breath, closed his eyes and suddenly it felt as if he was being squeezed together, as if the air itself was pressing in on him. Then suddenly the pressure was gone and Ed opened his eyes.

He was standing in an office, that was familiar, and yet incredibly foreign at the same time. But the décor of the military office wasn't what had Ed's attention; it was the man sitting at the office desk before him gaping.

Roy's mouth was hanging open and it seemed like he was trying to form words but none came out. Ed smiled genuinely for a brief moment before he realized that something was wrong. The blue light from the transmutation hadn't gone away and Ed could feel the pressure mounting again. He reached out his left hand desperately towards Roy, hoping to anchor himself to this world as he realized that it was Mr. Crazy who was causing the problem with the transmutation.

The desperate look on Ed's face must have gotten Roy over his shock and he basically leaped over his desk in order to grasp firmly onto Ed's hand before the whole world went dark for both alchemists.