Author note: Yup, me again, with yet another story. I wanted to take a break from my multi-chapters stories and this happened.

I intend for this to be a serie of random one-shots, all based on the same 'verse in which Megatron and Starscream have consensual, long-term relationship and keep it a secret from everybody ( that also mean, Starscream's trine, the Autobots, Soundwave, Shockwave...and even the CIA)

Every chapter will center around a particular kink or theme. ( my own meme, sort of) and interface styles will vary: Tactile, Sticky, Plug-n-play, spark...I'll work them all in this somehow.

The chapters' order doesn't matter much since I'll probably jump back and forth along the 'verse time-line.

Kink 1: Alt mode.

Pairing: Starscream/Megatron.

Interface mode: Tactile.

Warning: mention of oral. Sexual themes ( non-sticky)

Note: This chapter is partly about the origins of Starscream and Megatron's relationship. I might throw some more elements of past events or flash-back in the next chapters but that shouldn't happen too often.

Ch 1: Target practice accident.

Training was primordial to a warrior's life. Even when engaged in a war, even if it that had lasted for vorns, a soldier needed to keep himself sharp and physically fit.

The exercise provided by their occasional field fights against the Autobots wasn't sufficient. That is why Megatron requested from all his Decepticons that they train on a regular basis. They could do so alone, within their respective group or during the twice-a-week training sessions organized by Soundwave all Decepticons soldiers had to attend with no exception.

Megatron himself- after all, he was their leader and a leader has to show the example- trained every day. He did so, sometimes for groons on, and enjoyed his trainings almost as much as he enjoyed the real fight. Somehow, they reminded him of his old days in Kaon, back when he would train in a filthy petro-rat hole in preparation for his next gladiatorial fight.

His training hadn't changed much since then. He still trained for close-fight, endurance, resistance and, three times a week, target practice.

For that particular exercise, he needed a handler, preferably one that was bound to wield him in battle.

And although Soundwave or some other Decepticon occasionally fired him when the situation demanded it, the task usually fell to his second-in-command and Air commander, Starscream.

Which is why, whenever he wanted to do some target practice, the warlord requested the seeker's assistance. That, unbeknownst to the Decepticon leader, never failed to make Skywarp laugh.

Every time ol' Meg is asking Screamer to do some 'target practice' with him, The purple seeker once explained to Thundercracker. I always imagine Screamer as the target! After all, Megatron seems to use him more as such than as a handling hand!

His blue partner would laugh along with him and Starscream would let them, at most he would briefly berate them for being disrespectful toward his person. But, in truth, he preferred them to believe this version of their reality rather than another one, the actual one.

He would pull up his best annoyed expression before acknowledging Megatron's call, the fake mask was a necessity in front of the troops while their respective eagerness was to remain hidden from them.

They might be highest in ranks, caution was never overexercised among Decepticons- or Autobots, for that matter; The slightest weakness had a potential to be exploited. How many could use it to rise against them, they didn't know and weren't eager to find out either.

Megatron and Starscream didn't consider their relationship a weakness per say, as it more often than not, strengthened them considerably and provided them with a synchronization they could have never attained before.

Back when they had gotten involved with each other, it had been all just for pleasure and stress-relief, both leader and second-in-command having libidos that needed attention. A mutual physical attraction, unconfessed until a particular event, had helped the matter.

Then megacycles went by and, as they kept seeing each other on a more or less regular basis, the whole thing eventually morphed into something else entirely.

Gradually and dreadfully, Megatron and his second-in-command discovered that they had developed inconvenient feelings for each other.

Those feelings, purposefully ignored by both leaders at first, eventually became a part of themselves that they could only live with and indulge in as they- not without difficulty- finally acknowledged them for what they were.

Their relationship entered another phase, in which the rules were different and to which they both agreed, provided that nobody ever knew about it.

The leaders, who for a long time had grown out of younglinghood, were very much aware of a downside.

The feelings themselves, those were dangerous. They were the weakness other could use against them if anyone were to find out about their existence.

They had already shown their dark side in the past, on several occasions. Among them could be mentioned this very inconvenient event when a furious Megatron, frustrated after a particularly heated argument with his second, had almost blasted Starscream's head clear off the seeker's shoulders.

Thankfully for Starscream, the blast of Megatron's cannon only ripped one of his air intake, which was still more easy to fix than a severed head.

Who kept count of the too many times a disappointed Starscream stormed out of the base, swearing vengeance to an equally butt-hurt Megatron, only to reappear orns later with one of his famous take-over attempt plan in processor. Starscream was an unforgiving, vindictive creature, that much was certain.

Love, Megatron and Starscream eventually came to a common agreement, was a dangerous and tricky emotion that needed controlling. It was then decided, along with the secrecy of their relationship, that they would talk about their private problems together before attempting anything that could prove detrimental to their cause and faction. That went.. actually rather well.

Starscream still regularly confronted Megatron and challenged his leadership, if only to show that he was still his arrogant and ambitious self and to remind Megatron that he wasn't to be tamed, ever.

Megatron responded to his second's challenges with the same confident force. Depending on his mood, he either faced them calmly, expecting Starscream to get to the last of his patience so he could bring the outburst down with damage dealt to the beautiful frame; Or- and on most occasions-they settled this in the berth and that always satisfied them both, no matter who did what.

oOo

They had chosen, for their firing practice, one of the big storage room in the lower decks for which they had no other utility. Always when this was only training, Megatron set his gunmode to its lowest setting, mindful to conserve energy, for they never had too much in store.

The room extended over the entire length of the ship's bottom hull, which gave it perfect range for the exercise. A round target, on which concentric circles had been drawn, was placed on the far wall. The bulkhead on which the target hung had been reinforced for safety. If Megatron ever forgot to lower his shot's power, it would do them no good to practice on the naked bulkhead of a ship laying on the ocean's floor.

Megatron made a backward somersault as he transformed, landing in Starscream's waiting hands with practiced ease. Immediately, since speed of reaction was part of what they tried to improve here, the seeker adjusted his hold on the Walter P38, pointed it in front of him, took aim and fired.

The energy blast hit the target, not quite the center of it but close enough.

" Again!" Megatron ordered and his voice made his alt mode tremble lightly in Starscream's hands.

Starscream corrected his aim and shot a second time, this time hitting the center of the target.

" Good" Megatron commented. He could actually 'see' through the scope of his gun mode. " Now we'll practice dynamic reception and shooting without aim." He informed.

The seeker opened his hand so Megatron could jump off it and get back to his bi-pedal mode. Not needing words to know what they had to do, they both turned toward the lateral walls and walked to their respective corner to stand opposite to each other. When they were positioned so, Megatron nodded and they ran back toward each other. Megatron transformed mid-run and Starscream reached out to grab him; once then gun firmly in his hand, he swiftly turned sideways and fired at the target without actually aiming at it, just as instructed.

He missed the target by a few inches. Starscream frowned, not satisfied of his performance at all even if this was one of his best shot for this particular exercise.

" Missed." Megatron said flatly. " Again!"

They did this for two full breems, improving speed and precision every time. This was exerting but they enjoyed the exercise, taking it like a challenge more than like a chore. Very often they hoped the rest of the army could enjoy their own training as much as they did their. Their aim was disastrous for the most part and Soundwave's training sessions did little to help it.

Starscream ran, his intakes gone labored but his concentration still sharp. He reached out for Megatron as he stumbled in transformation toward him, then, gun steady in hand, he twisted on himself and fired.

The already battered target board fell down in pieces when the shot hit its central support.

" Alright." Megatron said, his own ventilation system hissing lightly in exertion. " I think it's enough for today."

Starscream found himself reluctant to let go of the gun in his hand.

He secretly liked to hold his leader in gun mode. It gave him an- admittedly false- feeling of superiority. This was the great Megatron reduced to so small an object, with no hand to grab and no real control of his own trigger. The ex-pit fighter looked almost helpless like this and that, for some reason, turned Starscream on more than he felt willing to admit.

" Just a minute." He said quietly. With the fingers of his other- unoccupied- hand, he touched the long barrel in a light caress. To his delight, the gun in his hand shock in surprise.

" Starscream...What are you doing?" Megatron asked, more embarrassed than furious. Remaining in alt mode for longer than what was necessary wasn't something he was fond of. Just like Starscream, he knew he wasn't in complete control of himself like this and dreaded to have to endure any kind of assault in this mode.

" I'm just trying something." Starscream replied, certain that Megatron would soon understand what he really was up to, and continued his light ministrations.

" I'm not fond of that idea." Megatron admitted and tried to vibrate his way out of his second's grip.

But the seeker only adjusted his hold more firmly on the grip as he sat comfortably on the cold floor.

The door was always locked during their firing practice, to prevent anyone to get his head accidentally blown off. They were safe there, away from prying optics.

" I wasn't too fond of your last idea either" He reminded him. " but I indulged you nonetheless. So, be nice and do the same for me!"

He considered the weapon in his hand, wondering what to do next. Oh this could be fun! He decided. Bringing the gun to his face, he stroked it against his cheek. " so, what do you say, leader?"

" Fine" Megatron said, sounding annoyed. " But then you'll have to let me tie your arms to your wings again." he requested. Honestly, he was starting to heat up at the light touches and wanted to see what else the seeker would do.

" Hm, we'll see that." Starscream replied unconvincingly. He slid the gun against his cheek, angling it so only the tip touched his face, and dragged it toward his other cheek, purposefully avoiding his mouth for now. He could feel light vibrations in the weapon, obviously Megatron wasn't as adverse to this as he pretended. The seeker offlined his optics and hummed, adding his own vibration to the metal.

He brought the gun to his lips eventually, but opened his mouth just enough so to lightly kiss the length of the barrel, which was already heating up. He kissed everything that passed between his lips as he moved the gun around to reach all of its surface , barrel, slide, triggers and grip.

The grip, obviously, was the less sensitive part, so he chose to concentrate on the other parts, those who made Megatron groan and subtly tremble more.

The trigger and the tip of the barrel, he found out soon enough, seemed to be the gun's most happy places, which was nothing surprising considering their respective location when Megatron was in root mode. The barrel was that very sensitive protrusion in Megatron's back and the trigger was part of his pelvis and was located right behind a very sensitive part of his leader's anatomy.

Starscream flicked his tongue against the finger-trigger experimentally and Megatron let out a louder moan, his whole frame shaking in the seeker's hand, that reaction was certainly no worse than the one Starscream had expected. He licked the small piece of metal again, groaning himself at the tremor it caused, and wondered if he could bring Megatron to overload only by doing this.

He couldn't keep that up for long before he wanted retaliation, he decided. And by retaliation he, of course, meant 'getting some himself'. His other hand, that had remained idle until then, started to wander along his so very sensitive sides and hips.

He moaned, his voice getting loud. Mindful of his cried and not wanting their rattle to attract someone in, he pushed Megatron's barrel in his mouth to muffle himself.

As he was engulfed by a sweet warmth that reminded him of other things they did together, Megatron's vibrations intensified even more. Starscream sucked on the long piece of metal, poking the entrance – the exit, actually- of the cannon with the tip of his tongue.

With his hand still holding the gun, he teased the trigger.

" S-Starscream!" Megatron moaned. " I can't...Won't last long if..you..keep doing that."

" Good then" The seeker spoke around him, which made him go crazy with pleasure. " Because I'm not expecting you to!" and he continued.

He sucked the barrel a moment more. When he felt the gun freeze in his mouth all of a sudden, he angled his head and the gun down, to sweep his tongue on the underside firmly.

He knew what he had set himself up to, knew what the very likely consequences of this act could be, and yet, when Megatron roared his overload, Starscream didn't even try to pull away.

Losing control entirely as he surrendered to ultimate pleasure, Megatron fired.

It was painful but Starscream had expected this and he didn't mind, pain was often part of their games.

The setting was still thankfully low when the shot tore through Starscream's throat and, were a more powerful blast could have ripped the seeker's head off, it occasioned only local damage to the flexible tubing.

As soon as the red-hot gun slipped from Starscream's mouth, Megatron transformed, electric arcs still running across his frame in the afterglow. The seeker looked up at him with a guilty, amused and energon-stained smile.

The warlord crouched down next to the seeker. " open up" he commanded, a small hint of concern coloring his voice. Starscream offered his best innocent smile, did as told and opened his mouth wide obediently.

Megatron gently held Starscream's head in place as he examined the wound. It was small but deep, nothing they could fix by themselves.

" How will I explain this to hook ?" Megatron tried to frown as he pulled Starscream up but only managed to smile back at his foolish, wonderful lover.

" Target practice accident?" Starscream supplied, shrugging. His voice really sounded horrible now that his vocalizer was damaged.

Megatron couldn't help kissing the energon away from his seeker's lips.

" Alright!" The warlord said, reaching for his first aid kit in his subspace pocket. " Now keep still and think of a nice, plausible explanation while I patch you up."

END

Thank you for reading. Please comment if you liked this installment.

Note: Megatron having no control over his own trigger in gun mode is proved in the episode ' Autobot spike' in which Spike uses Megatron ( gun mode) to shoot at the Decepticons while Megatron is seemingly unable to prevent himself to fire.