I'm not too happy with the style of this one, but I think it's the best it's going to get w/o a total rewrite.  The latest of the slut!Ed list, Al/Ed/Fury.  PG-13 rating at most.

Keeping Company

Sometimes, Cain Fury couldn’t help but touch the younger man. For a person whose whole life for several years centered around a suit of armor, Alphonse Elric’s skin was surprisingly soft and warm. Cain berated himself for being surprised. It matched Alphonse’s tone even before the brothers had found the Philosopher’s Stone. Now, it matched Alphonse’s face, his eyes, his general personality. After everything Al had gone through, he still remained a gentle soul, and Cain respected him for that.

Another reason he loved touching Alphonse was that Al was the only Elric brother he dared approach.

"Cain," Alphonse sighed, petting the kitten hiding in his shirt, "you really shouldn’t be so afraid of my brother. After all, you’ve known him since he’s been in the military."

Cain sighed and idly stirred his drink. Since Alphonse’s restoration and recovery, the two had taken to eating lunch together on a weekly basis. It was one of the few times Edward Elric could be parted from his little brother, claiming that he disliked finding animal hair in his food. That only inspired Cain to carry an animal with him more often, a fact Alphonse had quickly picked up on. After a brief but thorough interrogation had Cain confessed.

Ever since their discovery and use of the Philosopher’s Stone, Edward had grown more . . . intense.

Alphonse never explained the reasons behind his brother’s new attitude, and Cain had never asked. However, Alphonse continued urging Cain to meet again with Edward.

"Brother’s always so busy," the young blond said softly, hiding his kitten back in his shirt as a waiter walked by. "His research is heavily classified, and when he’s not working on that, he’s out doing various tasks for the Fuhrer. I worry about him, Cain." Those soulful hazel eyes–so like a puppy’s!–stared at him. "I would really appreciate if you could try meeting with him. He’s so stressed, and I know it would do him good if you could meet with him."

Cain swallowed. Eyes like that always got him into so much trouble. "But if he’s so busy, he has no time to see me!" he protested.

Alphonse smiled encouragingly, reaching out and touching Cain’s hand where it rested on the table. Cain’s breath caught. Several years of travel and battle meant nothing to Alphonse Elric, not considering his past "condition." Not even a callous tainted that warm flesh–

So different from his brother’s.

"I’m going to have dinner with him tonight," Alphonse assured him. "You can eat with us. My brother’s cooking, and he’s an excellent cook."

Cain smiled weakly. The hand that wasn’t trapped under Alphonse’s tender touch pushed the remains of his lunch away. He wasn’t hungry anymore. "I wouldn’t want to intrude–" he began.

Alphonse flashed his most charming smile. To Cain’s embarrassment, he could practically feel himself melting in his seat. He had been under his fellow animal-lover’s spell long before he had seen him in the flesh. Now that he had. . . .

"You won’t be intruding," the slim alchemist urged. "My brother needs the company."

Cain hesitated the merest second longer, entrapped in those pleading eyes. Alphonse’s beauty easily shattered the last of his protests. "What time?" he asked, resigned. He doubted the young alchemist had any idea what he was doing to him.

Another winning smile. "7:00 tonight. Brother’s making lasagne. It’ll be excellent."

Cain watched as the deceptively slender hand slid away from his own. "Just out of curiosity," he began, desperate to keep the conversation going, "where did Edward learn how to cook? It’s a little unexpected, especially with how often he’s on the road."

Alphonse’s bright smile faded a little. "Oh. Mother taught him. She wanted one of us to know how before she died."

Cain never touched another bite of his lunch.

xoxoxox

That night, Alphonse opened the door for Cain. His smile lighting his face, he took the bottle of wine from the older man. "Thank you," he chirped, opening the door wider for Cain. With a tentative smile, Cain stepped into the small dormroom. Al closed the door behind the tense soldier. "Brother’s in the kitchen."

Cain’s smile remained on his face by the barest of margins as he followed Al into what appeared to be the living room. What I thinking? the brunet moaned mentally, adjusting his glasses. Sweat made them slide on his nose. I shouldn’t be intruding on their time like this. I should be–

"Cain?" a soft voice called. Cain looked up to meet a pair of golden eyes. Edward Elric leaned against the door leading into the kitchen, a towel in is hands. Time had been kind to the older Elric, his hair still thick and shiny in its ponytail. Like Cain, Edward had glasses, but he doubted his made him look anywhere near as sexy as Edward’s did. Cain swallowed. "Thanks for coming. I’m sure Al appreciates the company."

Again the tentative smile. These brothers always think of each other. "It’s no problem," Cain assured him, glancing at Al. Alphonse grinned encouragingly. "Al told me of your cooking, and I wanted to try it."

"The lasagne’s in the oven," Edward continued quietly, placing the towel somewhere in the kitchen and out of Cain’s sight. "It’ll be ready soon. Salad is in the fridge. I hope you like ranch dressing."

Another glance at those golden eyes easily revealed the answer. Edward’s once legendary temper, something the then-Colonel Mustang had loved to rile up, had been transformed into an overall intensity after the uprising and Al’s restoration. It showed in those intelligent eyes, in the way Ed held himself, even in Ed’s swift walk as he returned to the kitchen. Child Ed had disturbed him, but Cain had dealt with it well enough. After all, Edward Elric was their little child prodigy, their golden child. Adult Edward stood as an equal at the Fuhrer’s side, as clever and dangerous as a panther. Now Ed was even scarier than an armed Riza.

Alphonse seemed to notice his nervousness, as he walked to Cain’s side and slung an arm over the man’s shoulder. The bottle of wine was still in his other hand. "Don’t worry," he breathed in his ear. Cain hoped the young Elric couldn’t feel his shiver. "Just relax. Brother’s actually really nice." He squeezed the dark-haired man’s shoulder, and Cain reflected inanely that it was odd for Edward’s brother to be taller than him.

"Why don’t you make yourself comfortable?" Alphonse continued, guiding Cain deeper into the living room. It was small and the chairs were stiff, but at the moment, Cain was more than grateful to be sitting down. "I’ll take this into the kitchen."

Alphonse’s stride was more casual than Edward’s, Cain noted, leaning against the back of the chair. He sighed with relief at the feel of something at his back. Alphonse was more relaxed than Edward.

Guilt flushed through him, and he bowed his head. He had known Edward since Fuhrer Mustang had taken the temperamental child under his wing all those years ago. He had seen the boy grow, pass through puberty, and become the fine, admirable–

What was that sound?

Every instinct flared, and his pistol weighed heavily in the back of Cain’s pants as he slipped out of the chair. That was not the brothers talking in the kitchen. That was something else, a sound incongruent with brothers talking and cooking. Something didn’t fit, and after years of dealing with homunculi, that was enough for Cain. He fingered his gun, slinking to the kitchen door. Over the years, protecting the Elric brothers had become second nature, something Mustang had encouraged. Hearing strange sounds in their dorm, especially knowing how many enemies the brothers had–

His fingers wrapped around his pistol, Cain peeked into the kitchen. The color drained from his face. A moment later, it rushed back threefold, and Cain hastily stepped away from the kitchen entrance. He didn’t know what was worse: What he had just seen, or the fact that his blush wasn’t entirely from embarrassment.

Edward and Alphonse were kissing.

It had not been a platonic, brotherly kiss. Alphonse had been gripping the base of his brother’s long braid, holding Edward close and devouring his mouth. Edward had been clinging to Alphonse, his face contorted more from desperation than passion. In the doorframe, Cain had seen the faint tremors shaking Ed’s frame, as well as the soothing motions of Al’s free hands.

He should have felt disgusted. Instead, Cain could only feel pity. He slumped back into the chair, staring sightlessly at the nondescript wallpaper. The way Ed had gripped Al’s shirt, so tightly. . . .

"Cain?" The dark-haired soldier leaped, and Al jumped back from the chair. Wide hazel eyes stared at him. "Are you all right? I’ve called you twice!"

Cain gulped, studying Al’s mouth. Besides the man’s swollen lips and slightly rumpled shirt, one would never know he had been . . . been. . . .

Making out with his brother in the kitchen.

The expected disgust still didn’t appear. That gave Cain the strength to smile at the younger Elric brother. "I’m fine," he said cheerfully, soothing the worry on Alphonse’s face. "Is dinner ready?"

Al’s grin returned. "Yep! Wait till you try it. The lasagne is my mother’s recipe."

Taking Cain’s arm–Did his years as the armor make him so tactile? Or was he always like that?–Al led the older man into the kitchen.

How long has this been going on? Cain wondered, his smile at Edward its most natural since he arrived. Setting the last plate on the small table, Edward smiled back. For the first time, he noticed the sadness in those fierce eyes. Does it matter?

Steam still rose from the lasagne set in the middle of the table, and Cain sniffed lightly. "It smells delicious," he chirped, a part of him wondering if he could take some of it home for his kittens. He bet they would love it. He licked his lips at the sight of the crisp salad and bread, trying to ignore how Ed had not looked away from him since he entered the kitchen.

"Thank you," Edward said softly. One metal hand and one flesh hand dished out their dinner, and the three sat and ate. Alphonse kept the conversation going, asking about Cain’s pets, was he taking good care of Al’s kittens, and how was Ed’s recent chimerical experiments. For the most part, Ed remained silent, obediently eating whatever Al continuously put on his plate. Cain happily answered Al’s questions, going in depth concerning the health of his newest kitten. The poor kitten had looked so drenched in the rain, and he been shivering, and he looked so hungry–

"So," Ed interrupted casually, shifting some lettuce on his plate. "Did seeing us kiss disturb you?"

Both Al and Cain choked on their lasagne. Silently, Edward finished his salad and pushed his plate to one side. Ed’s voice had been calm, but his eyes were as fierce as ever. Cain knew that if he answered wrong–if he answered in any way that Ed thought somehow endangered Alphonse–he would not be walking out of the dorm.

That was all right. Cain took a deep breath and moved his plate away, too. "No," he said honestly. "I’m happy that you guys are happy." He smiled brightly at Alphonse’s worried face. "I think there would be no one better for you guys."

Alphonse beamed, and Ed relaxed again. "I knew he would understand!" Al cheered. "I told you, Brother!"

Edward smiled a little at Cain. "I wanted Al to have someone he could talk to while I was gone," the slight blond admitted. "The Fuhrer sends me out a lot, and not a lot of people know about us. It doesn’t leave Al with a lot of people to talk with."

Cain blinked, then blushed. "Thanks for the trust," he murmured.

Ed and Al exchanged quick glances, and Ed gifted his little brother with a warm smile Cain doubted was ever shown to anyone else. Blushing deeper, he lowered his head.

A warm, uncalloused hand grabbed Cain’s hand, and he knew instantly that it was Al’s. Shyly, he looked over his glasses to meet Al’s gentle smile. "Thank you for the understanding," Al teased. Cain grinned back.

A pop interrupted them, and they turned to see Edward pouring them Cain’s wine. "Did you buy this?" Ed inquired. "Or did you get it from Mustang?"

Cain’s blush answered, and Ed grinned, flashing slightly sharp teeth. For some reason, that old, fierce grin helped relax the older man more than Al’s gentle smile.

"Don’t worry," Al said cheerfully, raising his drink in a toast. "Brother steals his chocolates all the time."

"Al!" Ed yelped, and Cain laughed, tapping Al’s glass with his own. After a moment, Ed followed, tapping the animal-lovers’ glasses. As one, the three drank the wine.

Refilling their glasses, Al offered another toast. Only after the third refill did Alphonse speak again. "Actually, I also wanted you to keep Brother company, too." He winked at his blinking brother. "Brother needs more companions than his books and me, after all."

Red tinged Edward’s cheeks, and Cain grinned. Maybe their vivacious child prodigy wasn’t as gone as everyone thought.

"Alphonse!" Edward groaned, hiding his face in one gloved hand.

Al winked at Cain, and then he leaned across the table and kissed his brother again. Cain swallowed, watching their lips move against the other’s. Perhaps out of some sense of discretion, they didn’t open their mouths, but it was hot enough without tongue. Enraptured, Cain watched Ed tilted his head and gently mouth Al’s lips before pulling back. Ed caught his eye as the slender blond sat back down.

"Did you like that?" he asked softly. The sadness was gone from Ed’s eyes, replaced by some odd mischievousness.

Cain swallowed thickly. "W-well," he stuttered, "you both a-are very–"

"Don’t say beautiful," Ed warned.

"Attractive!" Cain finished quickly. "And watching you two–"

Apparently, Cain wasn’t destined to finish his sentences, but he couldn’t find it within himself to care. Closing his eyes, he whimpered against Al’s warm lips. A moment later, he moaned against Ed’s. When he opened his eyes again, both of the brothers were grinning at him.

"Keep us company anytime," Al said cheerfully. He raised his glass again. "Another toast?"

Trembling fingers touching his lips, Cain struggled to smile. It was hard to do that when he was gaping. "O-okay."

For all their differences, the brothers’ lips felt almost exactly the same.

And at that moment, their smiles were identical.

"Toast," Cain managed, raising the latest glass.