
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/12646410.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Star_vs._The_Forces_Of_Evil
  Relationship:
      Marco_Diaz/Tom_Lucitor, Tomco
  Character:
      Marco_Diaz, Tom_Lucitor, Star_Butterfly
  Additional Tags:
      Revenge, Licking, Love_Bites, Horn_Stimulation, Horns, Dirty_Talk, Rough
      Sex, Mildly_Dubious_Consent, Sexting, Texting, Chatting_&_Messaging, Dom/
      sub, Dom_Tom, clothed_handjob, NSFW_Art
  Series:
      Part 2 of Prompts/Secret_Santas/Short_Stories_(stand_alone_stories), Part
      3 of Online_Exhibitionist
  Stats:
      Published: 2017-11-06 Completed: 2017-12-02 Chapters: 2/2 Words: 4699
****** Canceled Plans ******
by FlorinaLyndis, RickSlamsTheMultiverse
Summary
     Star bails on her plans with Marco and Tom to hang out with someone
     else. Clearly not happy with being ditched, the two of them have
     their own fun in hopes of making Star jealous.
     Yeah, to make her jealous...
     [Tomco]
Notes
     First time doing a Tomco fic! Loving SVTFOE right now, so of coarse,
     we had to add some sin into this fandom as well! ;]
See the end of the work for more notes
***** Burrito Date *****
As a red hood covered his eyes, a young boy leaned against the wall of his
friend’s room, lifting the cloth every so often to check on the blonde’s
status. She was still bouncing from one side of the room, looking for whatever
in the world she was looking for, and he wasn’t buying into helping her out.
He’d already told her to get ready and they’d known for the entire week what
the plan was. Unfortunately, Star Butterfly played by her own rules, and Marco
Diaz knew this already. He’d lifted the hood from his eyes before he’d checked
the phone one more time. It’d already been an hour since she started on this
crusade for the “perfect outfit”…
 
“Star, Tom’s going to be here soon. We were supposed to be ready for the
concert 45 minutes ago! Can’t you just put on whatever so we can go?”
 
“No, Marco! I have to find the perfect outfit! This is going to be the big
blowout concert for an old Mewman friend of mine! I always knew he wanted to
hit it big, and I want it to be perfect for him! ‘Sides, the concert tickets
were free and we have guaranteed seats! There’s no need to worry, Marco, I
promise!”
 
As much as she’d said that to reassure him, he knew her saying things like that
eventually lead to other things that had nothing to do with her original goal.
It was just her kind of way of doing things, and Marco never really had a
problem with that. At the same time, however… It tended to cause issues for
things that should never escalate to that kind of level. Marco pouted as Star
continued to rampage through the room and he’d settled into the fact that she
wouldn’t ever change for anyone, and he couldn’t ever ask her to either. Just
at the thought, he couldn’t help but smirk.
 
Just as he’d thought she was done, though, he heard her mirror ring. He’d
lifted an eyebrow and wondered if it was Tom, then he’d heard a name that he
hadn’t ever heard before. Perhaps her Mewman friend? Star had answered the
mirror without missing a beat and had a quick chat with that other person,
Marco not quite paying any attention to the conversation and blocking
everything out as he’d lost himself in thought. Before he’d realized it,
though, Star was standing in front of him in her usual attire, red horns and
blue dress and all. Of course, Marco was stunned and he was building with rage
from all of that wasted time before he’d noticed the look of worry on her face.
 
“Marco, I just got a call from my friend and the concert’s been cancelled… I’m
gonna… I’ll be back later, okay? I’m sorry!”
 
“Wha… Star, you can’t jus-”
 
Marco couldn’t even finish his sentence before she’d pulled out a pair of gray,
sword-like dimensional scissors and used them to cut a hole to Mewni, putting
her hands together apologetically before bowing into the portal and closing it
shut behind her. He’d reached his hand out as if to stop her, but she was
already gone. A few more thoughts crossed his mind before he’d realized that
she’d nabbed  his  dimensional scissors and quickly checked his pockets to
confirm that. With a groan, he’d bunched his hands into fists and pounded one
against the stone wall, feeling the sting of his flesh hitting the hard
material but ignoring it.
 
I can’t believe she just bailed on me like that! If this guy is such a good
friend, why haven’t I ever heard of him before? I mean, at least with Tom,
she’d told me about him… Some mystery guy...
 
Marco allowed himself to wallow in self-pity for a bit longer before a ball of
flame erupted inside of the room. And cleared away, leaving a few scorch marks
on the floor, but not much else to show that fire had been there. What else did
the fire leave? Marco looked up from the floor and noticed a demon who was
dressed quite dapperly, raising an eyebrow as the demon’s eyes trained on
Marco. All three of them. Shrugging a bit, Marco pushed off of the wall and
greeted the guest.
 
“Hey Tom. Star left. We’re not going to the concert. You can go back and do…
whatever it is demons do. What  do  demons do?”
 
“Okay, Marco, first of all -  ow, racist . I’m a person like you, but better.
Second, what do you mean we’re not going?! I put on nice clothes and
everything! Are you telling me that I wasted all this time and we’re not even
going?!”
 
Seeing that Tom was going into his usual “burn everything around me” kind of
rage, Marco raised a finger, very much not wanting to deal with Tom burning
down his house or whatever drama the demon was stirring up. He’d walked forward
and pat Tom on the shoulder as he’d walked past. He wasn’t looking to wallow
the entire time that Star was gone. He knew that if he were in some sort of
trouble, Star would drop everything to help him out too. That’s just how she
was… But even knowing that, Marco couldn’t help but feel the slightest twinge
of jealousy. She’d dropped him to meet up with whoever this guy was and Marco
had no way to feel good about that.
 
“Yeah, Tom. But whatever. Apparently the concert was cancelled or whatever, so
it’s not like we can go just the two of us.”
 
“But we can still hang out! If I’m going to get all dressed up, I’m going to
make sure it’s worth it!”
 
“... Tom, we don’t even like each other.”
 
That was enough to stun Tom for the shortest of moments before the demon turned
around and grabbed Marco’s shoulder, twisting him around to look into his
glowing triplicate of eyes. It was clear that Tom was displeased, and Marco
wasn't an idiot. He knew that he couldn't take Tom on in his current state -
even with everything he learned from his time spent with Hekapoo. Groaning in
annoyance, he'd placed his hand on Tom’s and pat it reassuringly.
 
“Fine, we can hang. I don't know what we'll do, though.”
 
“That's what I thought. How about this? We can make Star jealous. I can feel it
in your heart, Marco. Negative emotions are kinda my thing.”
 
“What are you…?”
 
“Look, I know how to get her worked up. We dated - briefly, yes I know - so I
know a few things. So how about we catch a good meal and take a few pictures?
That should get her worked up.”
 
Marco was honestly uncomfortable with this whole plan, but he also figured that
it wouldn’t cause any real harm. Tom seemed to be very visually excited about
this idea, though Marco wasn’t exactly sure what for. This would kind of be
like a date, but Marco was more occupied with the fact that they were doing
this with the intention of triggering jealousy on Star’s end. Maybe it wasn’t
the best idea, but... Shrugging once more, he’d bowed mockingly and motioned
his arms out of the door of Star’s room.
 
“Lead the way then, Tom.”
 
“Me? I don’t know what you guys eat here. Take us to one of Star’s favorite
places on Earth, or something.”
 
It wasn’t hard to think about, since Marco could only remember her obsessing
about a particular food recently… Taking a step towards the door, he’d motioned
with a finger for Tom to follow him. Thankfully, this place was within walking
distance and Marco had no plans to let Tom engulf him in flames to take him
places. It simply wasn’t good for his lungs, and it especially wasn’t good for
the floor...
 
--------------------
 
When they’d returned, Marco invited Tom into his room and they’d sat on the
bed, the human pulling out a pair of foil-wrapped burritos from a paper bag.
Tom had no idea what they were going to be eating, since Marco had walked into
the restaurant on his own. After all, he didn’t want people panicking over
seeing a demon - though the people in his town were surprisingly… unfazed by
Star’s presence. Even after the whole mewberty incident. Regardless of that,
though, it was simple enough to get everything they needed in order to “make
Star jealous.”
 
“What in the… humans eat metal? What is this?”
 
“No, Tom, we just wrap the food with it to keep it warm. It’s called a burrito.
Try it.”
 
“Ugh. I have no expectations, so I guess I might as well. I’ll never understand
why Star likes this dimension.”
 
Marco just wanted Tom to shut up and eat, so he’d removed the foil from the
bundle of joy and deliciousness and pushed the tortilla-wrapped goodness into
Tom’s face, forcing the demon to bite it or take a faceful of beany-cheesy
mess. As the fangs sank into the wrap and he’d started to chew, his demeanor
changed to that of someone who was skeptical to someone who was surprised and
impressed. He’d taken the burrito into his own hands and dug in, Marco putting
on the chillest fake smile he could muster and taking a selfie with Tom chowing
down in the background.  He couldn’t deny that it was fun watching Tom
experience food like this for the first time, though. The reactions felt
genuine and Marco never got a lot of that from Tom. Generally to get to that
part, he had to try a lot harder and deal with a lot more.
 
Following that selfie were several others that included them eating nachos
together, watching a movie on the couch under a single blanket, and overall
just hanging out. The last thing Marco sent was an overhead selfie of the both
of them laying on the bed together, heads side to side and both of them were
seemingly having a good time. He’d sent out all of the pictures to Star over
the time they were spending together and this would be the last one that Marco
had in mind. Mind you, this was all over the course of the past couple of
hours, so it was almost like a date - as Marco had felt aversion to at first.
 
Surprisingly, Marco had no reason to be suspicious. This was the first time
that they’d spent time together mutually and Marco hadn’t felt any sort of
shade or ulterior motive on Tom’s end. Even though they were doing this for
dubious reasons at best, it was still mutual. Maybe they could be more than
just friendenemies and actually be… friends? It kind of put a weird feeling in
Marco’s head, but that was just about what he expected. Feeling safe and also a
bit tired, his eyes started to close as he’d laid back against the bed and let
out a soft sigh to release a bit of tension. What happened next was more…
unexpected.
 
Marco felt Tom’s hand on his face, the feeling of Tom’s skin being surprisingly
soft - considering the fact that Marco knew Tom as this flaming demon who
couldn’t control his anger. His eyes opened slowly and he’d now noticed Tom was
over him, his eyes looking into his with a strange passion that Marco hadn’t
really felt directed towards him before. What was this strange… sensation?
Before Marco could even say anything or even object, Tom had pressed his lips
to the human’s in a very forward manner. Caught off-guard and honestly feeling
a bit frozen from shock, Marco sank into the bed as if trying to pull away, but
was unable to. Tom’s lips - very much like his hand - were very… soft.
 
Without missing a beat, Tom’s hand moved away from Marco’s face and over to his
phone, taking a picture of this kiss before moving down to Marco’s waist and
sliding under his shirt. There was a moment of panic for the briefest of
moments before Tom’s fingers had made their way to one of Marco’s nipples,
gently pinching and working the soft nub tenderly and causing Marco to moan
softly. Tom knew what he was doing, and Marco was becoming putty in his hands.
It wasn’t something that Tom normally swung for either, but he knew that in
order to really get under Star’s skin he’d had to do something drastic.
 
Pulling away from the kiss, Tom looked into Marco’s eyes and had a devilish
grin, pulling at the human’s clothes and tearing them away, his eyes filled
with ravenous lust and desire. All intention of making Star jealous was soon
fading into an entirely other thing, as the demon’s eyes glowed a deep crimson
and his hand found its way to Marco’s crotch, palm pressed against the building
bulge in Marco’s pants, stroking it through the teen’s jeans and working it
fervently. Marco’s moans became more apparent now as any attempts to fight the
sensations that Tom was putting him through fell away to his own curiosity.
 
“You know Marco, we don’t need her... but I’d still love to see the look on her
face after she sees this. Let’s continue.”
 
Marco looked up at tom incredulously, not quite sure how to absorb what he’d
just heard. At the same time, however, he couldn’t help but want more of what
Tom was giving him, and - as far as he could tell - Star wasn’t responding to
any of the texts or messages, so she wasn’t coming back anytime soon. He’d
seemed to have lost his voice though, as all he could let out was another moan
as Tom teasingly gave his clothed crotch another firm stroke. He’d nodded
slowly, still a bit lost in the lull of lust, but also finding himself growing
more and more curious for more of what the demon could offer.


***** Forgotten Motives *****
Chapter Summary
     Smut. The smut is here!
Chapter Notes
     Sorry for the long wait guys! Really hope you enjoy it!
     Art is by my buddy Gothy!
     Be sure to follow her on Tumblr. :) She's wonderful!
See the end of the chapter for more notes
As the brunette’s curiosity and lust had began to burn, the demon only held a
grin on his face - almost as if he was a hunter who’d managed to capture his
prey. Tom’s lips began to split and his teeth gleamed with every lustful
intention he had for Marco. His hand placed so possessively on Marco’s crotch
continued to work into the human’s body, Tom’s fingers gliding against the
outline of the bulge and feeling out each of Marco’s sweet spots, noting them
for later down the line. Marco’s fingers dug into the blankets below them,
almost as if he was trying to hold onto something to brace himself for the
pleasure. The demon could only find enjoyment in the other’s trepidation and
brought it upon himself to teach his lover of the pleasures of lust.
 
Not wanting to stay focused on that particular spot, Tom’s lips began to press
into Marco’s neck, pressing and caressing against Marco’s delicate skin, Tom
letting off soft moans with every contact. Instinctively, Marco’s arms wrapped
around Tom’s head and held him close, his hands finding their way onto the
demon’s head and stroking along the silky locks, grazing along the demon’s
horns and - without realizing it at first - causing Tom to flinch ever so
slightly. Tom continued to stick to Marco’s neck though, his tongue flicking
out and dragging itself along the tender flesh and electricity through the
other boy’s body. The convulsing of his body caused the Hispanic teen to stroke
against Tom’s horn again, the demon boy’s back arching from the sudden
sensation of having his horn touched so gently and delicately and causing him
to let out a lecherous moan.
 
Upon that realization, Marco had come to the conclusion that it was time for
him to change the pace of the situation. Tom thought that he’d had control, but
perhaps it was time for this red belt to show off. His digits began to more
definitively wrap around the sensitive bone now, guiding his fingertips across
the length of it and around the sharp tip, working it as skillfully as if he’d
been trained his entire life. This was enough to send shivers through the
demon’s body, his eyes closing as he tried to fight against the sensation to
focus upon his target. As Tom was getting flustered though, Marco couldn’t help
but allow his lips to curve into a wicked grin, knowing exactly how he was
going to turn the tables.
 
Marco’s lips found their way to one of the horns, lightly kissing and flicking
his tongue out against the bone, Tom not quite knowing how to retaliate since
this was a new sensation for him. Flowing from one action to the next and
without missing a beat, Marco’s lips spread as he’d taken a bit of the horn
into his mouth, suckling upon it and caressing it with the lithe muscle in his
mouth, bringing forth a few moans and allowing the sound to reverberate against
the demon’s bone and adding a new sensation into the mix, Tom’s moaning growing
to a fiery pitch as he’d leaned into Marco, wanting more - but also not wanting
to be left in the dust.
                                        
[Tomco]
                                [Art by: Gothy]
Tom managed to find his way to Marco’s pert, firm nipple and he’d bitten down
gently upon it, causing Marco to yelp, startled from the sharp sensation of
pain - with a strange hint of pleasure - and causing him to release Tom’s
horns. There was a glimmer of Tom’s fangs as he’d regained control of the
situation and his tongue began to lash hungrily against the tip of Marco’s
nipple, working the nub as intently as he could. The pulses of lust that filled
Marco’s body with every lash had the poor boy holding onto the bed again,
trying not to let go of what little sense he’d had left.
 
“W - Wait, Tom, that’s - I ne-”
 
Ignoring the babbling boy, the horned teen’s hand began to work again, thumb
and index grasping the metal zipper that held back Marco’s erection and pulled
it down, looking to release the rod from its prison. It took only a few
graceful movements and a snap of the button holding the denim together before
the only thing between Tom’s palm and Marco’s dick was the thin fabric of
Marco’s underwear. When the palm of the demon’s hand pressed against that
fabric, it was almost an entirely new sensation. Marco’s sensitivity skyrocket
as his hip pushed up against the firm - yet smooth - flesh and he allowed the
overwhelming feeling submerge him.
 
“Come on, Marco. Just let me lead, okay? Star’s needs to see that you’re mine
now. How else will she see how she messed up!?”
 
It seemed as if Tom was back at the helm, keeping Marco in check by focusing on
the brunette’s most sensitive parts whenever it seemed like he was making a
move. The constant attention that was being focused onto him was had coaxed
quite a wet spot onto Marco’s underpants, the spot where the tip of his sex was
pressed into the cloth. Tom’s eyes turned to focus on the wet spot - even as
his lips were locked onto Marco’s nipple - and his fangs shone with wicked
intent as he’d wrapped his fingers more definitively around the clothed shaft,
working it with hunger as he’d chuckled and lashed Marco’s sensitive nipple
with his tongue again.
 
Marco shivered and bucked as he was slowly rising from being so deeply
enveloped by his horniness. He was getting close to dousing the inside of his
underpants with his own sticky goo and he had no chance of stopping it either.
With a grunt and a heavy moan, Marco released a jet of semen into the thin
cloth, shooting it with enough force that some of it had very visibly spurt out
from under the cloth and began coating itself onto Tom’s hand. The demon simply
smiled from ear to ear, using his free hand to take the phone and snap a photo
of Marco’s stained shame while also taking another picture of his lips and
teeth wrapped around Marco’s nipple. After checking the picture for quality,
Tom brought his sticky hand up to his face and he’d licked Marco’s juices off
of it, savoring the salty stickiness more than he thought he’d would.
 
Marco laid on the bed, panting softly as he’d tried to regain his composure but
not doing too well in that department, his tip being rubbed by the cloth -
triggering several sensitive reactions in his body. By the time he’d realized
what was going on, Tom had already reached under the waistband and gripped his
bareback cock, stroking along the muscle with complete disregard for Marco and
causing him to let out a heavy, involuntary moan, his dick still at a point
where it wasn’t its hardest, but still maintaining its size at a respectable
“half-chub.” Seeing this seemed to make Tom’s grin even wider and he’d worked
the softness of his palm into the top of Marco’s erect penis.
 
“You look so pathetic and fuckable, is this what Star sees in you? Is this what
she likes? I mean, you’re all flustered and you’ve already cum. You’re kinda
cute honestly. You know, maybe I see the appeal...”
 
Feeling particularly powerful, Tom snapped his fingers and had made Marco’s
underwear disappear and leaving the Hispanic child in just his top. Marco had
nothing to retort Tom’s words because his body was in such agonizing pleasure
that his mind had muddled into mush.
 
“Heh, you’re our little boy toy, aren’t you? Though, I’m not sure I’m gonna
wanna share you after having you for myself, Marco.”
 
The demon snapped another picture of Marco’s dick and sent that to Star with a
peace sign. He couldn’t help but grin when he was so clearly able to take
advantage of Marco. He wouldn’t let it end there, though. Of course, the next
part was going to be particularly enjoyable. Tom had slid off of the bed and
stood in front of the heavily breathing human, grabbing his legs and spreading
them out, snapping once more and allowing his pants to fall to the floor. It
seemed that he was already primed and ready to go, his length hard as a rock.
 
Marco’s eyes widened as he’d watched Tom make each movement, not knowing what
to do or what to expect until he’d seen the demon’s dick come into view and
he’d gulped nervously, trying to decide whether he should try and escape or if
he should take in this new experience. Before he could reject that thought,
however, Tom was already making his move and had pressed the tip of his member
to Marco’s asshole, a shiver crawling its way through Marco’s body. The
realization that Tom had made no effort to wet the cock was also enough to make
panic set in.
 
“Tom, are you… a - at least wet the tip a little, I mean, you can’t be seri -
ah!”
 
A wave of relief washed over Marco as Tom had graciously spat on his own dick
and rubbed on the viscous saliva to act as a lubricant. There was something
sinister in the way Tom was grinning though, and - before Marco could raise
objection - Tom had plunged his dick deep inside of the other boy, Marco’s body
convulsing from the strange sensation of having a foreign object pushed inside
of the hole that normally only let things out. There was a fire burning inside
of his anus and Marco had wondered if that was how it normally felt to get
fucked in the ass. As if reading his mind, Tom responded to the silent inquiry.
 
“Your ass must be burning now… Demon fluids can be quite the potent
aphrodisiac, so that’s what you’re feeling. But, really, if I’d known your ass
was this tight, I’d have fucked you much sooner! Shit!”
 
As Tom groaned, he’d began to pump into Marco without any restraint, fucking
the human boy to submission. He’d started taking a video on his phone once
Marco started moaning, the look on his face that of pure ecstasy as his eyes
were rolling up into his head. Marco was enveloped in the strange, new
sensations and loving every second of them, his arms reaching up to grasp both
of Tom’s horns in his hands and holding onto them as if they were handles. This
prompted the demon’s own moaning as the soft feeling of Marco’s palms against
his horns only worked to drive his lust even harder. They were both entangled
in pleasure and with only a single means of escape - release.
 
“F - Fuck, Marco , you’re so damn tight…! Ah - it feels so fucking goodinside
you.”
 
Tom was finding it harder and harder to hold back from emptying himself into
Marco’s body, thrusting harder with every movement and feeling himself taking
step after step towards the final eruption. Marco was simply holding on for
dear life to Tom’s horns, shaking his hips and moaning his own delights as he
was starting to get the hang of being anally fucked. He’d completely forgotten
the original purpose of what they were doing... at least until Marco saw that
Tom was taking a top-down picture of Marco taking a dick in his ass while his
own cock was standing at attention.
 
The thought of Star seeing him like this both excited Marco and filled him with
shame. Would she like something like this? Would she be disgusted? Possibly
want to join them...next time? Was there going to be a next time? Did he want
one?
 
His cheeks burning a deep crimson and Tom taking that chance to get that on
video as well. Seeing Marco like that, though, was enough to get the demon
fired up all over again and he’d started drilling deeper and harder into
Marco’s tight anus, roaring and laughing with an almost insane lust and
enjoyment. The moment of release was soon coming and Tom groaned his impending
orgasm.
 
“Here it is, Marco! Take my fucking hot load in your ass! UGHHHH!”
 
That was all it took, and jet after jet of hot semen filled Marco’s back door
enough that each thrust was making the man juice overflow from his insides and
spurt from either side of the hole. The sensation of being filled to the brim
with the hot juices inside of him was enough to get Marco to climax a second
time, emptying his own balls onto his own stomach and chest, both of the boys
howling with the intensity of the release. Though it was quite shaky, Tom
managed to get most of the orgasming on video before he’d tiredly dropped the
phone onto the bed and collapsed on top of Marco, both of them panting and
trying to catch their breath. At least before he’d dropped the phone, however,
he’d managed to hit send…
 
------------------------------------
 
A tear in the dimension formed in Star’s room and the hole opened up to reveal
a very disheveled and very tired Star. She’d groaned and stepped through before
closing the portal behind her, scratching the back of her head as she’d relived
the day that she’d gone through in her head. Having to console her friend
through the despair of having the concert canceled was an entire ordeal and she
was glad that she was able to bring her friend to tip-top shape. At the same
time, though, that’d taken up her day and she was exhausted.
 
Looking at her bed, she’d noticed that she’d left her phone on top of it and it
was bright with tons of messages and notifications. Star raised an eyebrow as
she’d picked up the phone and started to read through everything and scroll
through messages… and pictures… and videos... Everything that she was looking
through was… sublime. She couldn't help but drool as she’d watched it all and
found herself feeling all warm and fuzzy in certain places. Biting her lower
lip and checking to see that her door was locked, she’d grinned from ear to ear
and jumped in bed. The boys may have thought they were making her jealous, but
it seemed Star had her own plans in mind for everything that they were showing
her...
 
 
Chapter End Notes
     Thinking of doing Tomstarco and more Tomco in the future~ Let us know
     if you'd be interested in that. :)
     Thanks so much for reading! Please be sure to comment, we love
     feedback! <3
End Notes
     Find me on Tumblr @ FlorinaLyndis (C137cest warning)
     /////
     Do you guys like it thus far? We hope so! :)
     We'd love it if you left comments/kudos/subbed to the story, etc.
     More to come soon!
     Feel free to read our other stories as well,
     if you like Rick and Morty (RickMorty/C137cest)! :]
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