Title: Alchemy of The Heart

By: Evangelina Amaryllis

Genre: Romance/Friendship

Spoilers: First Season/Conqueror of Shamballa.

Type: Multichapter

Couples: OC/Roy, OC/Edward and later OC/?

A/N: My loveliessss! I've just recently finished watching the first season of Fullmetal Alchemist, and you'll be happy to know that I've started a fic for it! It's a Roy/OC/Ed. The OC is introduced in here and I think you'll like it! Caught In The Middle 3 has not been started, but I will start it once I've updated Dearest One. Happy Holidays, guys, and consider this a late XMAS gift :D

"Oh yeah, Al! I finally get to watch the exam! Best part is, I don't have to do any work!" One tiny alchemist named Edward Elric cheered. His brother who wore a large suit of armour made a laughing noise. "You were just like them before, weren't you, brother?" Edward nodded proudly before stopping in front of the building he knew so well. His blond hair was hung in its usual braid as he walked inside, alone. "Hey, Colonel Mustang." He greeted merrily as he walked along. "I can't believe you're gonna miss this!" The Flame Alchemist growled angrily. Work on a day like this? Work on the day where finally a girl in a miniskirt would try to become a state alchemist? He frowned at Edward before walking past him. Edward was nevertheless cheerful. As he arrived in the large room, he greeted the other alchemists who were granted access. Before him stood three men and a woman. Well, she was more a girl, since she seemed about his age. Her brown hair fell to her shoulders in a beautiful drape, and her brown eyes sparkled like stars. She sighed, "I'll be last, okay? I don't feel very confident. . ." The men nodded in understanding; she was the only female after all, and not that many women got to be state alchemists, too. She had the right to be nervous. Edward saw a repetition of his own exam. The first man created a large building that took all his energy. He then saw a twist; the second man made swords dance around him and jab around as if attacking his opponent, but he fell to the ground in pain as he acknowledged the rule of equivalent exchange. The third man used his alchemy to heal the fallen man, but again, he fell weak due to the rule. Edward felt a sense of dejavu as he saw the large masterpiece made by the first man falling onto him. The girl moved quickly, holding out her hands; from her hands, blocks of ice flew and pushed at the creation. Then, she used wind to lift it in the air and had it wrap in grass with her water to help, and finally, she shot it with fire and thunder, making the building explode into flower petals inside and outside the arena. He laughed loudly, causing everyone to stare at him, including the girl. "Geez, what a coincidence. I did almost exactly the same thing, but it was a little less fancy!" The brunette giggled and nodded. "Well, unless anyone sees otherwise, we have a new female to our ranks!" King Bradley announced. Everyone applauded the girl and she blushed lightly as she stood.

"So, what's your name?" Edward asked her as they walked along side-by-side.

"I have two names for two places. The first is for my hometown, and the second is for when I'm here. You can know me as Luna." She held her hand out to him, which he shook; a big grin on his face. "Edward, do you forget to drink your milk?" She asked innocently.

"I hate milk!" He replied, whining.

"No wonder you're so short!" She pouted at him and folded her arms across her chest.

"DON'T CALL ME SHORT! I'LL CUT OFF YOUR FEET AND STICK 'EM ON YOUR HEAD!" He yelled. Luna giggled and wrapped her arms around him.

"It's okay, I was kidding! You're just still growing."

He sighed in relief. "Finally someone understands!" They laughed together as they walked out of the building. Only when the sun shined on her did Edward notice what she was wearing; a simple blue blouse with a navy blue miniskirt. She wore a silver locket around her neck and on her feet were blue ballerinas. They continued walking, before he stopped at a pillar. She followed suit, wondering why he did so. "How old are you, Luna?" He asked her.

"I'm nineteen." She replied. Edward's eyes widened in shock at her response.

"Nineteen? You look what, thirteen!"

She giggled and nodded. "So I've been told." He sighed and nodded; so she was older than him. They continued walking until Edward waved happily at a man in a large suit of armour. "Hey, Al!" He called. "Come on!" The man in armour ran over to them and Luna smiled at him. "Luna, this is my brother, Alphonse Elric. Al, this is Luna; she's the new state alchemist!"

"Congrats, Luna! I saw your display!" He said through the armour. She giggled and nodded.

"Why thank you, Alphonse! Or would you like me to call you 'Al'?"

"Al's fine, if you want to." He replied. "Brother, you did something similar to that, didn't you?"

"Yes I did, Al. And you know what? She's five years older than me!"

"But I was so much better than you, definitely, pipsqueak." She smirked.

"WHO'RE YOU CALLING A PIPSQEAK MIDGET?" He yelled loudly. Luna laughed happily and hid behind Al. They all laughed as they walked away from the building, having each made one new friend.

"Hey, new girl!" A voice called. Luna turned around with Edward and Alphonse, only to see her old friend. She ran to him and flung herself into his arms, hugging him tight. "Maes! Oh Maes, you're here!" Ed and Al exchanged confused glances and walked to them.

"You two know each other?" Edward asked them. Luna nodded happily, holding onto the lieutenant colonel.

"I took her in back when she was a child and I was a little bit younger." He explained. Luna nodded happily. "Be careful out there, Luna. State Alchemists don't exactly have the best jobs." Edward nodded in agreement.

"It's a tough road." He explained.

"I know that, guys. I'll be fine!" The men laughed at her apparent naivety, before Maes Hughes put on a serious expression.

"You're a tough girl, and I know you can do it." He grinned at her.

"Ed, c'mere for a sec." A voice called. All four looked to the source and each had a different reaction. Edward groaned, Hughes grinned, and Alphonse rubbed the back of his head with Luna looking completely curious. Edward walked over; muttering under his breath, but Luna was faster. She ran over, much to the delight of the man named Roy Mustang as her miniskirt swayed. She stood in front of him gleefully. "I've heard about you! You're Colonel Mustang, the Flame Alchemist! Uncle Maes told me all about you! I really admire you, Colonel!" She was practically clinging to him and he couldn't wish for less.

"Oh, you must be the new alchemist. Luna, they said your name was?" He tried to keep calm, but his happiness over her miniskirt caused him to smile widely at her.

"That's me! So, what do you think I'll be called? Edward's Fullmetal and I know why that is, but what about me?"

"I'll need a personal display if you want my opinion." He told her, obviously trying to pull her into an appointment.

"Okay, well, once you're done with Ed, let me know and I'll show you whatever you want, Colonel Mustang!"

"You can call me Roy, and I'll call you Luna, alright?" As he told her this, she giggled shyly and nodded.

"Okay, Colo- I mean, Roy." She giggled more as she called him by his name and he smiled as he heard the cute sound.

"Would you just get this over with, Colonel?" Edward groaned loudly. Luna giggled and hugged the blond man, partially annoying Mustang.

"Right, right. Ed, report to Maria Ross. She requested that I tell you this personally. It seems urgent, so you better go. Could have something to do with you-know-what." He eyed Luna nervously, but she simply rolled her eyes.

"You mean the Philosopher's Stone?" She told them. Roy sighed in relief, glad that she knew and that he didn't have to hide anything from her. "Well, Ed, be careful. Al, you're going with him, right?" The boy in armour nodded.

"Bye, Luna. It was nice meeting you!" He told her. She returned the greeting and waved at the two boys.

"I'll make sure they don't do anything stupid. Bye, Luna; it was nice seeing you again!" Maes Hughes told her. She waved at him, too, and found her cheeks turning pink as she found herself alone with the Colonel.

"Would you demonstrate for me, Luna? Or are you tired?" He requested.

"No, no, it's okay. Um, what do you want me to do?"

"Well, show off your main skills." He grinned at her. As per his request, she made a small shard of earth float in her hand, then placed fire on it, making it burn but not melt. Afterwards, she made spirals of water circle it, followed by a circle of electricity. From the top of the shard, a plant began growing through the fire. She looked at him, wondering how he felt about it. "Amazing. Without even any specific action." He grinned at her. "Would I get hurt if I touched it?"

"Yeah, but hold on." She cased it in ice and handed it to him, the movements still occurring. He smiled at her. "This ice will never melt, Roy. You can put it in a box and it won't melt. Consider it a meeting present!" He grinned wider at her.

"Thank you very much, Luna. Would you please come to my office so that I can look at the taken titles and see what I'd call you? It doesn't mean it's exact, but I could give you my opinion, if it matters."

"It matters so much, Roy!" She hugged him and he grinned, wrapping his arms around her. Even if she hadn't been wearing a miniskirt, he would have liked her. He picked her up as if she were a bride and smiled at her. Her cheeks turned slightly pink and she fluttered her eyelashes at him. He walked her to his office. On the way, he asked her several questions; her hometown, which she refused to answer, her age, which made him happy and some of her favourite things. "What's your favourite colour?" He asked.

"Blue." She answered.

"Me, too! What's your favourite food?"

"Chocolate, no other food comes close!"

"Haha, so you're a girl at heart!"

"What's that supposed to mean!" She pouted playfully and he simply laughed.

"What do you like to do?"

"I like reading, writing, drawing, training, alchemy, and – as I've recently discovered – talking to Roy Mustang!" He laughed at the last comment and gently sat her on his desk. He sat on his chair and she faced him, smiling at him.

"So, let's see. Master's been taken, but it would've suited you." He smirked as her cheeks turned a bright red. "Hmmm. . . Princess is a bit odd. . . Varietal's taken. . . I got it! You, Luna, are the Lunar Elemental Alchemist!"

"Lunar Elemental. . . Why Lunar?" She asked.

"Well, I noticed your water was flowing faster than everything else, and the moon controls the tides. Also, your plant work was pretty good. Your Earth was white, too, so that's obviously got something to do with the moon, and lastly, your name; Luna. A beautiful name, by the way."

"Oh, thank you!" She flung herself into his arms happily, giggling. He caught her, holding her close and setting her on his lap. She rested her head on his shoulder and sighed. "Roy, you're really amazing!" He laughed again and stroked her hair. They heard a knock and a man stepped into the room. As he saw them, his face turned crimson. "I-I-I'm sorry!" He quickly stepped out, closing the door just as fast. Luna looked up at Roy curiously, who shook his head and kissed her own. "Hey, Roy?" She told him.

"Yes, Luna?"

"Could you excuse me? I really wanna go home. . ." She looked down nervously and he nodded.

"Want me to drive you there? I'm free today."

"You really would? Oh, thank you!"

"Hey, Mustang!" Edward Elric yelled as he opened the door wide. He froze as he saw the two. "You son of a-"He didn't continue as he was struck by a flame before he managed to attack. Luna jumped off of Roy's lap and ran to the unconscious Elric boy. "Edward! Edward, are you alright?" She held him close and looked at his face. "Roy! How could you!" The Flame Alchemist raised an eyebrow.

"He was invading my privacy and attacking me."

"He was just annoyed for some reason!" She sighed and summoned the wind with her hands, and had it carry Edward by her side as she walked out of the office.

"Women can be so complicated. . ."

"Maes! Maes, oh I'm glad you're still here!" Luna cried as she ran to the Lieutenant Colonel. The sun was setting behind her as she moved Edward. "Could you take me home?"

"Sure, but what happened to Ed?"

"I'll explain on the way!"

"Alright then. Shall we?" She ran to the car, Edward and Hughes following her rapidly. Once in the car, Luna began explaining the incident.

"That Roy can be a handful at times." Maes Hughes rolled his eyes. "But don't worry; Ed's a strong kid, he'll pull through." Luna kept her hold on him, changing from fire to ice whenever his temperature rose or fell. "Hey, don't think so badly of Roy; he's a good guy, just; he can over-estimate people's strength."

"Edward could have died!" She cried angrily.

"I doubt it; Al would have gone looking for him, or any of the officers and they would have dealt with it. But that doesn't change the fact that you should punish Roy. Of course, your silent treatment is the worst punishment." He laughed loudly and parked in front of a simple but beautiful house. Luna used her wind again to get him up to her bedroom, and was closely followed by Hughes. She held Edward's hand tight as she performed the necessary alchemy and medical actions. Tears fell down her cheeks every once in a while every time she recalled a certain memory; when she would heal so many, and fail so many times. She was only calm when she felt his pulse return to normal and his eyes slowly open.

"Damn you, Mustang. . ." He muttered, causing her to giggle. Edward Elric looked up to see what he believed to be an angel; until he remembered that he had met this girl before, and her name was Luna. "Thanks, Luna. You really are a lifesaver." He grinned widely. Hughes had left earlier, leaving the two alone with the housekeepers.

"Edward, I'm just glad you're okay!" She flung herself into his arms, crying heavily despite mentally insisting that she wouldn't. He sighed and held her close.

"Hey, I'm fine all thanks to you. And I'm pretty sure Lieutenant Colonel told you that I don't die that easily." He chuckled and held her closer, kissing her head. He didn't know why he did that, and reprimanded himself later, but he did it, and at the time, it felt right. Once she'd calmed down, she stood up shyly and smiled at him. "Can you walk?" He tested himself, carefully standing up. He fixed his joints at the automail, but otherwise stood well.

"Good as new!" He grinned widely. She heaved a sigh of relief and giggled.

"Well, c'mon. You must be starving." She held her hand out, which he gratefully took.

"Where are we anyway?" He asked curiously as he took in the elegant nature of the house.

"This is my house, silly!" She giggled. His eyes widened as he looked around the bedroom. There was a crystal chandelier in the centre of the ceiling, and the floor was lined with elegant purple carpets. The bed sheets were made out of satin, and coated with purple velvet. Beside the bed was a wooden end table, which had a clock, a box and some photos. She noticed that most of the photos included a silver-haired man whom she looked very happy with.

"Is this your boyfriend?" He asked, hoping he didn't seem rude.
"No, no, that's my brother." She giggled, although she seemed taken by surprise. Flowers were at the corners and on tables and desks. As he stepped out, he noticed that the stairs were draped with a red carpet. He leaned against the banister as she locked the room door.

"What're you locking it for? I won't steal anything, you know." He grinned, showing that he was joking.

"This room. . . It belonged to my father before he passed away. . . It's the closest room to the entrance, so I acted without thinking . . . and I brought you here. . ." Edward's eyes widened and he straightened up.

"I'm so sorry. . . I had no idea. . ." She shook her head and forced a smile, extending her hand for him to take. He hesitated, but took it nevertheless. She led him down the stairs to a large entrance hall with a rectangular carpet on which was a fountain with Calla lilies. She walked him through a small wooden door and they arrived at the kitchen. There were two ovens, a microwave, three fridges, and a seemingly endless amount of drawers and cupboards.

"The ovens are for when we're making our normal food and a dessert, the white fridge is mine. No one touches it except me. The red one has the maids' food, and the black one is for our cooking supplies. "She explained, noticing the shocked look on his face. He nodded in understanding; so she was rich. Great. She opened the white fridge and brought out a chocolate cake, then began cutting two slices. He blushed lightly as he looked around.

"Where are the plates?" He asked nervously, wanting to help her.

"In that cupboard." She told him, pointing. He nodded and brought them out, and managed to open a drawer to find some forks, knives and spoons. He brought out the necessary cutlery by the time she was done and she put each slice on its plate. Returning the cake, she giggled and hugged him. He blushed heavily, but noticed that this was in her nature. She hugged almost everyone she saw; Hughes, Mustang, him, and she'd probably hug Alphonse soon. They were interrupted by a ring of the doorbell. "Maria, please open the door!" She called. The maid named Maria could be heard scurrying from her resting chambers to the door. After some exchange of unintelligible words, Maria walked to the kitchen.

"Miss Luna, a man in armour states that his brother, Edward Elric, is here, and that he wishes to make sure he is well." The black-haired maid explained. Luna nodded and walked out, looking even more elegant than her house.

"Maria, please take Edward and the plates to the sitting room." She ordered. The maid complied as the girl walked to the entrance hall. "Welcome, Alphonse. I'm sorry if we worried you, but Edward's fine and walking; just Roy being a little harsh." Alphonse Elric nodded. "You may come in and see him." The armoured boy stepped into the house nervously, closely followed by Roy Mustang. "Genevieve!" Luna called. A second maid with red hair rushed in. "Please take Alphonse to the sitting room to meet with his brother. Ensure that they are comfortable and if there are any problems beyond your ability to solve, let me know." The maid bobbed a curtsy and began leading Al to his seat. "Quite brave of you, showing your face here." She told Roy once they were alone.

"Listen, I didn't know it would be that difficult!" He countered, frowning. She was still wearing a miniskirt; he didn't stand a chance.

"I checked his wounds; he was already weak from the beginning!"

"But I didn't know!"

"Well you should've considered the possibility!"

"It was an impulse!"

"I hate you!"

"Just stop being so cute and maybe I could try hating you back!" He yelled. Her cheeks turned bright red at the comment, but she frowned.

"Just shut up and come in. It'll rain soon and there's no point in the Flame Alchemist getting wet." She gestured for him to come in, and once he did, she closed the door. She seemed to hesitate, before she flung herself into his arms. He caught her and smiled down at her; she didn't hate him, and that was all that mattered to him. He stroked her hair gently before pushing her away. "I think I wanna apologize to Ed." He blushed.

"Sure! Maria, please bring Roy a slice of cake!" She called before taking Mustang's hand and walking him to the sitting room. Edward was laughing with his brother when they walked in. Luna smiled at them and pushed Roy forward.

"U-um, listen, Fullmetal. . .I . . . uh. . . Um. . ." She kicked his leg and he sighed. "I'm sorry."

"Apology accepted, Mustang." He was obviously showing off for Luna, and she giggled as the cake arrived.

"Let's all just sit down. " Roy sighed and sat, gratefully taking the cake and eating it.

"Did you make this, Luna?" Edward and Roy asked at the same time. She giggled shyly and nodded. "It's delicious!" They said in unison before glaring at each other.

"Thanks, guys! Oh, Al, listen, I have a present for you!"

"For me?" Alphonse asked. She nodded and took his hand, pulling him up as he stood. She practically dragged him along with her until they arrived at her bedroom.

"Al, you really care about your brother, don't you?" He nodded. "Then take this." In his hand, she placed a silver locket. "This locket is split in half. You can put a picture of him in yours and keep it, and he can put one of you in his." Alphonse Elric seemed to smile as he thanked her. She jumped up and hugged him around his neck, causing him to grow nervous. She jumped back down and giggled. "Let's go back." He nodded and they made their way back to the sitting room.

"I should get going, Luna." Roy said as he set his plate down.

"Already?" She pouted.

"I'll see you tomorrow; don't worry." He grinned and she hugged him.

"I'll hold you to that. . . If I don't see you. . ." He chuckled and held her closer.

"You will. That's a promise." She pulled back and nodded.

"Genevieve! Come show Roy to the door!" She called. The maid came and bobbed a curtsy before showing the alchemist his way out.

"Hey, Luna! Can I get some more cake?" Ed interrupted, grinning widely. She nodded and called for Maria to bring more. Her smile returned once she noticed Alphonse.

"Hey, Al; you don't eat, do you?" He shook his head and she walked over to him. "It's okay! Once you're back into your body, I'll make you a massive cake!"

"Hey, what about me!" Edward pouted.

"You get a pie when you drink milk!"

"Not gonna happen." He muttered. "How did you know anyway?"

"The short ones always hate milk." She muttered

"I'm not short!" He yelled. Maria, Genevieve and a third maid rushed in, soon followed by a butler.

"Is all well, my lady?" He asked.

"Yes, Sebastian, don't worry." They nodded and walked off politely. "Please don't be loud, Ed. It worries them." She had a distant look in her eyes with caused Edward to think he'd been there too long. Alphonse seemed to get the same feeling as her bright, wide smile had faded.

"Hey, Al, you know we should go. Luna needs her sleep." She turned to them and forced a smile.

"Well, alright. But you guys are coming back, right?" They nodded and each hugged her tightly before being escorted to the door by her and leaving. Once they were gone, Luna frowned. "What do you want with them, Envy?"

A green haired boy smirked as he showed himself. "Nothing more than to kill Hohenheim of Light. And to do that, I need his sons to be in danger."

"You are to stay away from the Elric brothers, Envy." Luna hissed.

"Oh, you're no fun. I'm leaving." And so the homunculus left Luna to worry about her two friends.

"I wouldn't worry about them, if I were you." She heard a male voice say as she sat on her couch.

"Who's there?" She cried, standing up.

"Geez, don't worry. It's just me; Greed." She sighed in relief and smiled at him.

"You're helping them, aren't you?"

"Of course I am. But c'mon, you still don't wanna tell us where the stone is?" He leaned against the wall as he spoke.

"Sorry, Greed. But I don't even know, since it doesn't exist yet. Or rather, it does, but it's impossible to acquire it now."

"Aw, geez. . . This is tiring, you know."

"I'm sorry. But may I ask a question?"

"Go ahead." She looked into his eyes before asking her question.

"What was your true name?" The man froze in position, before answering her question as vaguely as he could.

"I don't even remember that, Luna." She nodded and touched his cheek once before watching him jump from her window.

"Greed, Lust, Gluttony and soon Wrath. The four misunderstood homunculi." She whispered to herself before letting herself drift off to sleep.

A/N: Hope you liked it, sweeties! :D Just so you know, I love you all! Please Review! I like you all, but please, if you're gonna sub/fave, please review, too! I want to know what you guys actually think of my work!

Byezerz!

~Evangelina Amaryllis