Chapter Text
For the most part, they’ve been able to hide their situation from their friends and the rest of the guild. Gray, to Natsu’s surprise, doesn’t seem all too concerned with the idea of their friends picking up on their joke.
Sure everyone is used to them arguing, and always being around each other because of their fighting. Lucy and Happy would often refer to them as a bickering married couple, but only if they knew now. And Erza did always want them to get along more.
Natsu isn’t sure how he would feel if the rest of their guild knew and he probably doesn’t have to worry about that. After all, Natsu is almost positive that Gray’s not going around telling their friends that the two of them are spending a lot of time naked together, touching each other.
However, all of this doesn’t seem to matter anymore when Lucy and Happy find them in an extremely compromising position one day.
The two had just finished practicing their slayer magic outside their home and were now inside, showering together, Gray playing with Natsu’s cheeks mostly and Natsu moaning and sticking his ass out as he’s pressed up against the shower wall.
Happy and Lucy are there to pick up some of Happy’s things. They try knocking at first but don’t hear anything, deciding to let themselves in. They notice Natsu’s clothes are on the floor in the living room and theirs steam coming from the bathroom.
“Natsu! Me and Lucy are here to get some stuff!” Happy yells out excitedly, just thinking Natsu is taking a shower like normal.
In the shower the two boys stop suddenly, “f*ck,” Natsu whispers out. “What should we do?” He asks Gray whose hands were still on his ass.
Before the ice mage can even think of answering, Happy is in the bathroom. “Hey Gray! Why are you holding Natsu’s butt?” He says very loudly. Gray pulls his hands away as they hear Lucy yell out from right outside the door. “Wait, Gray is in there?”
“Yeah! We were just showering!” He yells out unashamed and straightening himself to get out of the shower. “We were just finishing up.” He says out loudly stepping away from the water to grab a towel.
Natsu is still dead silent and conflicted on whether he is more mad at himself for not closing the shower curtain, after all it was just the two of them home, or mad at Gray for keeping his hands on his ass so long.
“They were showering together!?” Lucy yells out from right outside the bathroom, still too scared to step inside.
“Yeah, so what?” Gray says walking out the bathroom, past Happy and Lucy, only wearing a towel around his waist.
Natsu finally composes himself and follows Gray lead by grabbing a towel to dry off and wrap around his waist, but before he can leave the bathroom the blue cat is again asking him, “Why was Gray touching your butt?” He asks with a bit of smirk.
“Are you two in looooovvvvve?” He says teasingly.
“WHAT! NO! IT’S NOT LIKE THAT!” Natsu yells out with fire basically spilling out of his mouth. “TELL THEM ICE PRINCESS!”
“He has a really nice ass, I couldn’t resist.” The ice wizard says nonchalantly, coming back into the hall with Lucy, now wearing some dark shorts, but no shirt.
“WHAT!” Lucy says, her face turning red.
“NO! SHUT UP, ICE PRINCESS!” The dragon slayer yells out flustered and frustrated with how Gray is handling this. “We were just sparring and, and, we had to wash up after” He started explaining, stumbling over his words.
“Mhmmm, they’re in loooovvvve.” Happy says interrupting Natsu.
“WE ARE NOT!” Natsu yells out storming past everyone in just his towel and slamming the door to his room shut behind him.
“So are you two actually like dating?” Lucy says questioning, her eyes in swirls. Happy has a devilish smile on his face as he watches Gray answer with a finger in his ear and his eye closed. “No, definitely not, but he does have a really nice ass.” He answers before leaving the two alone to go make some dinner.
“They’re in loooovvve!” Happy says to Lucy now that they’re alone.
“Oh, Will you quit it cat!” Lucy responds before growing a bit serious, “There is definitely something going on here though.” She sort of whispers to herself, looking down with a hand on her chin.
‘I guess this isn’t that surprising.’ She thinks to herself, ‘the two have always kind of been obsessed with each other, but who’s gonna break the news to Juvia,’
“Do you two want some?!” Gray yells out from the kitchen where he has seemingly almost finished cooking some stew.
“Yes, Please!” The cat yells out. “Coming!” Lucy yells, snapping out of her thoughts and deciding to drop the subject for the day.
Natsu had stayed in his room the entire time Lucy and Happy were over and came out storming once they left, confronting Gray in his room who was laying on his bed completely nude and reading a book.
“Are you done whining?” The ice mage asks looking up from his book. He looks so hot reading in the nude, which was not unexpected, but still incredibly distracting for Natsu.
“Why would you tell them you like my ass!?” He yells out making a fist.
“Because I do.” He responds, seemingly shifting his attention back to his book.
“Damn it, Ice Princess, now they are gonna think we have something going on!” He yells back.
Gray closes his book and stands up to walk up to Natsu, huge co*ck swinging to and fro as he does.
“Why don’t we do something then, if they already think so, what do we have left to lose?” He says hooking a finger into the waist of Natsu’s pants. “I didn’t get to finish earlier, why don’t you slip these off.” He asks with a huge grin on his face.
Natsu gulps.
And that is how Natsu finds himself in this situation, fringe damp against his forehead, fingers grabbing at the sheets, completely nude, ass up, with Gray’s huge co*ck sliding in between his cheeks and seemingly forgetting about everything that happened that day.
“f*ck. Your ass is so f*cking tight.” Gray grunts, as Natsu lets the two large hands spread his cheeks. He can feel his hole twitch both from the sudden shock of cold air and Gray’s undivided attention.
Gray groans, taking one hand away from his ass. It’s not until Natsu feels the slap of Gray’s dick against his skin that he realizes Gray’s now holding his dick.
“Would split you open, huh? If I push in right now,” Gray mumbles, teasing the head of his co*ck over Natsu’s rim. Precum smears over Natsu’s skin, almost making Natsu feel like he’s getting wet.
“Can’t,” Natsu mumbles, feigning boredom as he subtly rocks his hips into the sheets. “It’s not a puss*, remember?”
Gray laughs behind him, slapping his hard pole against Natsu’s hole once, twice, and then a third time before he catches the head of his co*ck on Natsu’s rim. The dragon slayer’s breath hitches, fingers tightening when he feels Gray teasingly press the very tip of the head inside for a second, hole fluttering around the slight intrusion.
It’s moments like these that Natsu thinks, ‘f*ck, something’s going to happen.’ Gray might actually f*ck him. And more surprising to himself, he might actually be okay with it. But there’s no way they can do this.
Gray’s never had more than a fingertip in him, not even a finger, and like he said earlier it’s not a puss*. Gray can’t just shove his dick in, he has to be loosened up first, and he probably needs lube.
“Tighter than a c*nt,” Gray muses, angling his co*ck so he’s nestled between Natsu’s cheeks instead. “Bet you’d feel so hot,” he groans, thrusting his hips forward, ignoring the harsh drag of dry skin outside of the smidge of smeared precum.
“You’d never know,” Natsu reminds him, absently grabbing at the sheets.
“Never say never, .” Natsu can hear Gray’s smirk without even having to look behind him to see it. f*ck. “Come here,” Gray grunts after f*cking his hips forward again, worming an arm in between Natsu’s abs and the bed dragging Natsu up off the mattress a bit.
He maneuvers Natsu onto all fours, slapping the dragon slayer’s co*ck out of the way when his hand brushes against it, like it’s f*cking useless. The thought makes Natsu bite back a whine. He shouldn’t find this as hot as he does.
Natsu’s too in his own thoughts to realize that Gray hasn’t moved his hips. It’s not until he’s lowering down onto his forearms and arching his back that he realizes that Gray’s co*ck isn’t even resting on him anymore. But, before he can ask about it there’s an uncapping sound and a cool liquid-like substance being smeared in between his cheeks and around his hole.
‘f*ck.’ He thinks.
Gray slaps his co*ck between his cheeks again a second later, rubbing his co*ckhead in the mess of lube spread across Natsu’s crack. “Look how f*cking soaked you are,” he grunts, gripping Natsu’s rear tightly and roughly pushing his cheek upwards.
“Damn,” Natsu whimpers, pressing his face into the sheets. He doesn’t even care when he’s rocked face first into the mattress when Gray thrusts his co*ck against his ass, arms shaking to keep himself up and his back arched.
“Ha, I barely even need to touch you to have you like this,” Gray’s voice is smug as he speaks, slapping a palm against Natsu’s cheek. With every thrust of his hips, the head of Gray’s co*ck tugs on his rim, pushing at it with the purpose of trying to push inside, and every part of Natsu’s body is just begging for it, for Gray to actually do more and be inside of him. “Don’t even have to get my co*ck inside.”
The ‘wish you would’ stays between Natsu and his bitten lower lip.
It’s a lot to think about. This is all fun and games right? They hate each other, this is just mutually beneficial. ‘I scratch your back and you scratch’ mine as they say. And besides, they’re not actually f*cking. They’re just having a bit of fun with each other, and well, Natsu isn’t going to complain about having attention to his ass. It’s nice to walk around their flat in nothing, it feels nice to tease Gray, well in a way that isn’t violent.
The thing is, as soon as Gray actually puts it in, Natsu can’t be too sure if it’ll still be a game or not. It’s no longer just fun and jokes at that point, it’s sex. Natsu can handle a few rubs and stares and laugh it off the next day, but having Gray’s co*ck is a lot different, right?
It doesn’t make Natsu want it any less, though.
He’s stopped from spiraling through his thoughts, though, when Gray’s rocking against him harder, heavy grunts leaving his mouth before he feels Gray cuming all over his backside, painting his spine in ropes of cum. It doesn’t take much more for Natsu to cum with a muffled and pathetic sob into the mattress, arms shaking underneath him.
It takes him a few moments to notice the hand carding through his hair afterwards, the dip in the bed off to his side. Soft circles are being rubbed into the base of his neck as Gray’s hand moves out of his hair, making Natsu feel like he’s ready to pass out.
“You okay?” Gray murmurs, likely because of the way Natsu’s face is shoved into the sheets, the cloth sticking to his damp cheeks.
Part of him doesn’t even want to move. He feels boneless. “I’m okay,” Natsu mumbles, voice muffled from the cotton. He doesn’t need to look at Gray to see the smile spreading across his lips, he can feel it in the way Gray’s touching him, he can hear it in the way Gray chuckles a moment later. It makes his stomach twist with knots.
“Good,” Gray whispers, moving his hand to grasp Natsu’s shoulder, squeezing lightly.”Gonna take a shower,” Gray tells him, and a few seconds later, Natsu feels the bed dip again.
”Care to join?” Once he hears the faucet running in the bathroom, Natsu groans and fists the sheets, pressing his flushed face further into the sheets.
‘This is totally normal.’ He thinks as he gets up to join his rival.
