"Can we go again?"

"Certainly." Kimblee was feeling about ready for a second round himself. He hesitated, then, "Would you care to try it as a male this time?"

It had to be the oddest proposition he'd ever made. Like most humans, he regarded gender as something indispensable to one's self, a cornerstone of identity. It seemed callous, in spite of everything, to request that it change at whim. Yet if Envy was offended by it, there was no way to tell.

"Do you want me to be really masculine?"

"I want you to look and feel like you normally do, only…"

"Fuckable?"

"I was going to say 'gendered', but essentially yes."

It felt as though a very slight electric current ran up Envy's skin, with a few stray sparks of red alchemical aura as breasts vanished, shoulders became slightly broader and muscles more pronounced. There was again the feeling of insecurity, for although Envy was slightly more accustomed to male sexuality, everything was just…out there, in this form, shamelessly betraying his desire. And now there was someone here to see. Two people, in a sense, for Envy wasn't used to seeing its own form as male, typically assuming the form of another person, like Greed or…Kimblee himself. Envy decided he would never tell Kimblee about that.

Luckily, the first thing he did wasn't to try and grope Envy, merely to kiss him, languidly and unhurriedly. One hand buried itself in Envy's hair, which seemed to have changed too at some point; it was softer now and smooth, flowing like a river of ink across white sheets and alabaster skin.

"Does gender really matter?" Envy asked, pulling away slightly, dark eyes puzzled and almost childlike in this rare naïveté. "I mean, I'm the same person and I look almost the same."

"It does matter. I'm not sure why, but it does." He brushed a stray strand of hair out of Envy's face. "Some people have to have one; some have to have the other. I've never been content without both."

"Is that why you're with me?" Envy asked, brows furrowed.

"No. Were you only male or only female I would have pursed you just the same. But it's why I don't want anyone else."

It was exactly what Envy had wanted to hear without knowing it. Wasn't he essentially saying that Envy was the only one for him? Better, because Envy never would have believed it had there not been a definite reason behind the sentiment. Envy kissed him with renewed ardor, pulling him closer and wrapping arms and legs around him, all self-consciousness forgotten.

Kimblee gave a sound that was half moan, half sigh, shifting so he lay on top of Envy rather than beside him. His mouth roamed from Envy's mouth to the line of his jaw and down his neck, making the sin squirm. How sweet it was, being fully satisfied in the arms of one person, without having to regret what he was giving up in exchange for what he had.

He pulled back, so that his hair hung like dark vines around both their faces. Something in his ice-blue eyes made Envy shiver.

"May I…tie you up?"

Envy looked at him uneasily. "I'm...not a masochist."

"I don't have to hurt you." Kimblee said quickly. "I'm not interested in doing anything to you that you don't like. And while I think pain can be erotic, it's control that's truly…exciting."

With anyone else or at any other time, Envy's answer would have been a prompt and vehement hell fucking no, and yet…everything had gone so well thus far…. If it was an issue of control, Envy didn't mind giving that up. In his eyes he had done so already.

"You really don't want to hurt me?" Envy asked. That was the odd part, not that Kimblee had a control fetish, but that it went only that far.

"Why would I? I have no qualms about hurting people for a living – it can be rewarding, but I don't find it sexually gratifying."

"You enjoy having power over them, though. How is that different?"

"It's different because you're different. When I see you lying here, I want…ah, god, I want everything," he nuzzled the shell of Envy's ear, whispering into it, "over and over, I want to give you every kind of pleasure imaginable, tie you up and spread you out and wrap you around me like python, kiss every inch of you, fuck you until you can't think straight or see or feel anything but me."

He nipped Envy's earlobe, slightly breathless in the thrall of his own desire, before raising up and looking him in the eye once more. "Needless to say, that does not describe my outlook towards most people."

Envy didn't have any objection to that, although he had a slight objection to said lack of objection. Nonetheless, he wordlessly raised his hands over his head, one thin wrist over the other.

Kimblee, not being an artist of the conventional sort, nonetheless wished he could have somehow captured the look in Envy's eyes, they way they seemed to say, do what you want, slightly uncertain but still so deliciously willing. It was that surrender which he wanted - the affirmation that Envy in all his inhuman power and strength, was finally his to do as he pleased with - which made his blood boil. Not wanting to waste anymore time, he brought his hands together and then pressed his palms against the wall, orienting himself to the building's materials: fiberglass, wood, plaster, steel – yes, that was what he wanted. He focused on drawing it outward into a linked chain and two larger loops which encircled Envy's wrists, loose enough not to disrupt circulation, but only just.

Solid metal was too much even for Envy to break free of. The only way to get out would be to transform, and the thought of that in the current situation was just too horrible. Envy was sensitive about altering his form – even reshaping his hands into something narrow enough to escape the restraints was still grotesque to him, almost as bad as forsaking his current form altogether.

"Do I need a safety word?"

"Um, 'please untie me'?"

"That's more of a safety sentence…"

Kimblee grinned. "'Untie me immediately, human, or my revenge will be slow and painful'?"

Envy laughed. "Nah, I'd make it quick."

"Because you like me?"

"Because I like the element of surprise."

"You're sweet."

"Yeah, I'm a little darling."

"Careful." He lay down once more, nuzzling the crook of Envy's neck. "I might decide you need a bit of discipline after all."

Envy yelped as Kimblee bit down rather hard, then licked the spot as though in contrition.

"And if I'm good?"

"Then I'll be very nice."

He ran one hand down, exploring the newly unfamiliar terrain. His touch was firmer, more to-the-point than before. While he was confident enough with the female body, there was no substitute for subjective understanding. With women, it was a matter of experimenting to discover what they liked, but with a cock in his hand, he was relatively sure he knew how it worked.

Envy moaned softly, relaxing into the sensations as Kimblee rhythmically stroked his erection, while continuing to kiss and nuzzle his neck. This wasn't bad at all. It was like being spoiled, really, not having to worry what was expected or if he was doing something wrong, just lying back and being taken care of. Technically this stimulation was nothing new, yet there was a stark difference. What he did for himself had ceased to be anything but a chore decades ago. He would have indulged in gender more frequently, if it felt like this…. He moaned again, more insistently this time, arching into the caress, wanting only more…

Kimblee found it endlessly satisfying, the way Envy responded to his slightest touch so dramatically, obviously inexperienced and easily overwhelmed. He did in fact intend to give Envy more, but less was more at the moment, and he took his hand away, smirking at the bereft little sound Envy made at the cessation.

"Don't stop."

"Patience, I'll give you something better."

He began to kiss a line downwards, exploring the flat, muscular chest as thoroughly as he had the soft, contoured version, and downwards, over starkly exposed ribs. Envy made a thin female, but in the absence of even minimal curves he became almost waif-like, wiry muscle being the only thing which saved him from the look of severe malnourishment. Kimblee made a mental note to try and get Envy to eat more, although he wasn't sure it would make any difference. Meanwhile, on to more pressing issues…

He took a moment to enjoy the effect of this slow buildup. Envy was so delicious this way, trembling in anticipation, breath heavy, tense as a drawn bowstring. It had to be excruciating for Envy, Kimblee reflected, living for so long with only what he could give himself, and now to have something infinitely sweeter so close and yet still just out of reach. It appealed to the sadist in him. While he was content not to cause Envy pain in the traditional sense, he could not withstand the temptation to torture him in other ways.

He leaned down and exhaled hot breath on the tip of Envy's arousal, and then strayed to one side, licking one sharp hipbone as Envy might have wished he would lick something else, while his fingers lazily explored the soft skin of Envy's inner thigh, with one finger tracing the circular shape of the Ourobros mark.

Envy made a wordless sound of protest, tugging ineffectually at the iron restraints.

"This is revenge for the other night isn't it?" He asked, breathless.

"No." He nuzzled Envy's thigh. "This is me being a nice sadist." Damn, he loved those legs. He decided they would be up over his shoulders next time around. "But since you've been so good…" He left the sentence unfinished. There were better things to be done with his mouth, like swallow Envy's cock almost down to the base and suck.

"Ah…!" Kimblee's hot, wet mouth was heaven around Envy's aching hardness. It was not necessarily better to be pleasured this way as a male rather than a female, but the sensations were more direct, more accessible. Whereas before it had taken a while for Envy to even feel the possibility of release, now he was already getting close.

Inferring this from the sounds he was making, Kimblee pulled back and left Envy reeling. He encircled the base of Envy's member with his thumb and forefinger, inhibiting his ability to ejaculate.

"Ngh…bastard…" Envy panted. "Said...you were being nice…"

"Why, I'm just letting you enjoy yourself a bit longer."

Envy gave some odd sound that was half growl, half whimper.

Kimblee began teasing once more, licking Envy's weeping slit before swirling his tongue around the head, licking down to where his fingers gripped and then back up. He would have tormented Envy further, perhaps, but he was becoming uncomfortable himself now, his own arousal increasingly difficult to ignore. Envy's need only intensified his own, reminding him how badly he wanted the same done to him.

With that in mind, he enveloped Envy once more; sucking and sliding his mouth down and back up his length, while at the same time releasing his restraining grip.

Envy had a moment of disjointed, irrational fear that his body might break at he plummeted over the edge, surely it hadn't been made to feel this –

He screamed for the second time that night, as he spiraled up into heights of pleasure he had never known existed.

Kimblee grinned as he sat up and regarded Envy in the throes of post-orgasmic bliss. That glassy, shell-shocked look was the most adorable thing he'd seen in a while.

"You should let me out of this." Envy said, when he had recovered enough to think clearly again.

"Why would I do that, when I have you right where I want you?"

Envy made no response to this except to lick his lips…with a tongue that had become forked and very long. He was going beyond his comfort level in this, but he assumed the effort would be appreciated.

Kimblee's thoughts seemed to skip like a needle on a damaged record when he saw that, for a moment his mind was an absolute blank.

"I actually hadn't counted on that…"

"You scared?" Envy asked, with an arched brow.

"No."

He would be slightly baffled, later, that Envy could talk so well with a forked, lengthened tongue, but at the moment he had no attention to spare for trivial details. He quickly unmade the restraints, and no sooner was Envy free than he pushed Kimblee onto his back, plundering his mouth and nipping his lower lip. If Kimblee disliked this sudden role reversal he didn't show it, burying his hands in Envy's hair as it cascaded over both their bodies and returning the kiss with every measure of enthusiasm.

Envy broke the kiss quickly, turning his attention to his partner's body, a whole landscape of nuance which demanded immediate exploration.

The homunculus imitated other creatures by sight, and as Envy's eyes were keen, it was enough to create a passable facsimile. But now, he had to admit there was a lot more to a body than just to look at it. He felt himself becoming aroused once more, as his mouth and fingers traversed the lithe, well-toned musculature telltale both of Kimblee's soldier's life and mixed heritage. Although masculine and tall, there was a subtle refinement to his build that Envy rarely saw in frames of Amestrian men, just a trace of delicacy which made him all the more appealing to Envy's taste. He struggled with his sin for a moment, for it seemed unfair that this human had such loveliness so naturally, whereas Envy's beauty felt so painfully false. His sister's sin was more pressing than his own, however, and he dove lower, to the part of Kimblee that he was most anxious to explore, swiping his now dripping tip, before taking a deep breath and enveloping him fully.

"Mmmm…" Kimblee's eyelids flickered as Envy slowly began to bob his head. He entwined his fingers in Envy's hair, rubbing appreciatively. Mercy, Envy's mouth felt so good…Kimblee thought for a moment that Envy's teeth were gone, then realized they had simply become smooth as porcelain. His eyes shot open again as Envy's tongue snaked out, coiling sinuously around his shaft, sliding and squeezing like a boa constrictor. Envy wasn't the only one overwhelmed with novel sensations that night, that much was certain. It was better than anyone had ever given him, both in the anatomical difference and the simple fact that it was Envy doing it. He bit his lip and moved one hand from Envy's hair, digging his fingers into the sheets until his knuckles were white. He wanted this euphoria to last longer, but that demon's mouth undid him, crumbling the last of his careful control to dust. In the end he could do nothing but surrender as willingly and totally as Envy had to him.

"Ahh…ah, I'm almost –" He gave a cry to rival Envy's, as pleasure even deeper and sweeter than the first time consumed him. Envy continued to suck and, finally, swallowed. After letting him come inside of Envy as a female, it was not daunting.

Licking a stray drop of white fluid with a tongue that had reverted to normal, Envy lay down next to Kimblee.

"Pretty good for a novice, yes?" Envy asked with a sly smile, tucking a lock of Kimblee's sweat-damp hair behind his ear.

"Let me put it this way" Kimblee said, pulling Envy against him, "I hope you're fond of me, because you'll never be rid of me now. You've quite spoiled me for anyone who can't do that with their mouth."

Envy realized with gleeful smugness that Kimblee's hand's were actually shaking slightly in the aftermath. Hell yes.

"My my." Kimblee purred, as their bodies melded together once more and he noticed Envy's fresh hard-on. He supposed he could expect nothing less from an ever-youthful superhuman with decades of pent-up libido. He raised his right hand - steadier now - to Envy's mouth. "Get it wet."

Envy did so, eagerly, tracing each shape of the transmutation tattoo before mouthing each finger as he had another appendage moments ago. When satisfied his digits were sufficiently lubricated, Kimblee began working Envy's manhood once more, alternating between light, almost ticklish caresses and vigorous pumping. It wasn't long before Envy was moaning again, spilling himself into the alchemist's skilled hand. He smiled lasciviously at Envy, lapping at the pearlescent liquid on his fingers.

"Don't…" Envy whined, "Stop being so damn sexy, I'll never calm down."

"I'll rub you til you're raw if you need me to."

"My skin would only regenerate…"

"Then until my hand is raw. And then I'll use my mouth. We'll see how long it takes for you to run dry."

Envy shook his head. "Even once more and I think I'd blow a fuse."

"Don't hold back. I want to satisfy you entirely."

"You have." Envy draped his arms languorously over Kimblee's shoulders. "You've tired me out. Let's sleep, and do it again tomorrow."

"That a promise?"

"It is." He sighed and stretched, feeling hazy and sleepy and warm. "Hey…"

"Hm?"

"Would you…call me…you know, what you do?"

"Invidia." He murmured, kissing Envy very gently. "Invidia. My Invidia."

.

(A/N: Aggggghhhhh! This took sooooo looooong! Writing smut is haaaaard (no pun intended)! What the hell am I going to do when Greed jumps in there too? Aghagfasdagashd! *froths at mouth*)