Chapter Text
It’s been 6 weeks since Ace was impregnated by his baby brother, and his morning sickness was in full swing, despite any and all remedies Sabo tried.
When the doorbell rang, Ace had assumed it was yet another Rainforest courier or ChowMow delivery driver. He shuffled towards the front doors in Sabo’s hoodie and a pair of loose-hanging track pants.
He hadn’t expected to see Marco on the doorstep. He almost reflexively slammed the doors closed in his face, but his ex-coworker already shouldered his way inside.
“I brought the paperwork,” he said. “The termination of the contract, letters of recommendation, the whole works. You’d think with the company going under there’d be less paperwork, but alas-yoi.”
“Okay,” Ace nodded, taking the proffered papers and dropping them on top of the rest of their mail. “Thanks. Bye.”
Marco furrowed his brows.
“Are you okay?” He asked instead of leaving.
“We’re fine,” Ace shrugged. “Sabo’s always been earning enough to support us all, so we won’t really be affected-”
“I meant you, personally-yoi,” Marco interrupted. “You look- tired.”
Ace groaned, hand sneaking to press against his slowly-growing stomach. “It’s just the morning sickness,” he waved dismissively with his free hand. “It’s been hitting me pretty hard.”
“...You’re pregnant?!”
It slowly dawned on Ace that the wider world was completely unaware of his current state.
“Yeah,” he nodded, trying to stay casual. And then, in the biggest understatement ever: “Sabo convinced me. Luffy’s super hyped about a little sibling, too.”
“And you didn’t think to reach out to me?” Marco sounded hurt. “I’m a doctor-yoi.”
….So he was.
“Do you want something to drink?” He offered, leading Marco towards the living room. He was now glad for Sabo’s insistence to keep tiding everything up as soon as they were done with their “fun times”, leaving no trace of their activities.
Marco had produced a pen and started writing in Ace’s old employee health file, doing an impromptu check-up with just the things he carried on himself. If not for the familiar environment, Ace would have felt like he was back at the Whitebeards’ nurse office.
It was shortly after they finished with that, Marco now running through the pregnancy tips, when the front doors rattled open, letting Luffy in with his usual noisy exuberance.
The backpack appeared in the doorway first, tossed carelessly away. Luffy appeared shortly after, hands catching himself on the doorframe. His smile dropped the second he noticed Marco, phone appearing in his hand between one blink and another.
Ace had to diffuse the misunderstanding before anything happened.
“Luffy, baby, come here,” he said, outstretching his hand towards the boy. He waited until Luffy moved forward, clambering onto the sofa and burrowing into Ace’s side, hand moving automatically to rest on the small bump of Ace’s stomach.
When his phone came in sight of Ace, he could see the call with Sabo connecting.
“This is Marco, my old coworker,” he said, hopefully loud enough to make it clearly over the call. “He caught me by surprise today, to bring the last bit of paperwork from the Whitebeards. He’s a doctor, did you know? We were just talking about ways to combat the morning sickness.”
“Pineapple Guy is gonna make you feel better?” Luffy asked, and Ace snorted at the nickname.
“Sabo already tried most of what he suggested, but there’s a couple things that we might wanna try.”
Hopefully that would be enough to ensure Sabo wouldn’t rush back home in a display of aggressive territoriality.
“I should be going anyway,” Marco glanced at his watch. “I still have to swing by Izou and a couple other guys.”
He slapped his hands against his thighs, standing up. “I’ll see myself out,” he added dryly, nodding towards Ace and Luffy’s tangled forms.
They exchanged goodbyes, the two of them watching Marco like hawks while he left, listening for the sound of the front doors closing.
“Did he leave?” Ace asked quietly.
“I dunno,” Luffy shrugged, scrambling for his phone and switching tabs to their doorbell camera app.
Together they watched Marco walk down the driveway.
“He’s left,” Ace sighed, leaning back against the sofa. Then, slightly louder. “I swear, Sabo, I didn’t invite him over. He really just brought in the paperwork, and then started offering pregnancy tips-”
“I understand,” the distortion of the phone made it hard to judge his tone. “You’re just trying to do the best you can do for the baby.”
The baby Ace didn’t want in the first place, the baby Sabo was convinced Ace would try to hurt somehow… Well, considering that Ace had held a knife to his own stomach a couple weeks in, extorting a promise of their child never being involved — not like Luffy was — it wasn’t entirely unfounded, but… As long as Sabo kept his promise, Ace had no reason for drastic measures.
He knew exactly what to say there, though. “I just want to be a good daddy.”
A moment of silence.
Then, “Good job, Daddy.” Sabo’s voice was breathy. Ace would bet his arm he was aroused. “I’ll be home same time as normal. Maybe I’ll swing by our favourite restaurant, pick something up, hm?”
“Thank you, Mommy!” Luffy chirped, Ace echoing the words weakly.
“Leave me on,” Sabo continued. “I’ll mute my end. I’ve got a meeting to attend but I wanna hear Luffy say hi to his Daddy.”
Sabo had always been such a pervert.
Luffy dropped the phone, moving to straddle Ace’s lap and press close, hands sliding the hoodie up and over Ace’s tits as he licked over his lips. He groaned as his trapped cock rutted against Ace, and Ace, always weak to his baby’s discomfort, reached to unzip his shorts, taking Luffy in hand.
Luffy buckled in his grip, moaning into Ace’s lips and squeezing his tits with every thrust.
Ace could’ve sworn he heard the doors open, but that couldn’t be right. Sabo wasn’t due to arrive for some hours yet, they had just talked-
“I took your health record along by accident-” Marco was saying as he entered the room, words dying on his lips as he took in the sight.
Luffy noticed Ace tensing. He looked over his shoulder, pressing closer and growling at the sight of MArco there.
“What… What’s going on?”
“None of your business,” Ace said sharply. “Leave.”
“Ace-”
“Leave!”
Marco stood his ground. “I know you’re with Sabo, but you were very clear on Luffy being different-”
Oh, Ace knew he would have regretted spilling so much during those bar nights. Marco might have been the one person Ace was the closest to, save for his brothers. The only person who knew the full situation with Sabo, as opposed to everyone else who just knew him as Ace’s partner.
“Well, I changed my mind,” Ace said flippantly, sneaking an arm over Luffy’s shoulders and pressing him close. “And it’s none of your concern what we do at home.”
“If you’re being coerced-”
The only person who would have supported him if he wanted to leave. The only person who would insist he needed to leave, for his own good.
So Ace would need to stop Marco from caring in the first place.
“Just because you’re too much of a coward to go for what you want, doesn’t mean everyone is,” he said callously. “Sabo, Luffy and I are very happy together. We don’t need your meddling.”
Marco’s expression shuttered closed. He dropped the paperwork where he stood, the pages spilling out.
“Whatever you say-yoi,” he said, turned on his heel and left.
Luffy wriggled out of Ace’s embrace and pulled out of his grip on the cock, rushing to lock the front doors.
When Ace glanced down at his phone, the call with Sabo was already disconnected.
He groaned, throwing his head back. There was no telling how much he had heard. No telling whether he was rushing back home right now.
Ace only opened his eyes again when Luffy came back, pausing between his knees.
…Over the past few weeks, having his brother as close to him as possible came to be a very special kind of comfort.
Ace braced his feet against the floor, raising his hips and pushing his pants off fully.
“Come fill me, baby,” he begged, reaching for Luffy’s cock and tugging him closer. Not like Luffy needed much encouragement, pushing his knees underneath Ace’s thighs and, with Ace’s guiding hand, sliding directly inside.
“I love daddy so much,” Luffy mumbled into his neck, his hands - as always - moving straight to rest on his tits under Ace’s shirt.
“Love you too, darling,” Ace pressed a kiss against Luffy’s temple, pulling him closer.
Luffy’s moves were lethargic as he rutted into Ace and, shortly after he came with a soft grunt, they both fell asleep.
Ace woke up an unspecified period of time later, to a hand gently stroking through his hair. With both of Luffy’s hands accounted for, there was only one option for who it was.
He shifted, groaning at the sticky mess pulling at his genitals when Luffy’s cock shifted inside him.
Tilting his head to the side, he glanced over at Sabo with half-lidded eyes.
“Hi, Mommy,” he breathed out, hoping to improve his mood.
Judging by how Sabo dove in to devour his mouth, he needn’t have bothered.
“So good for us,” Sabo panted, peppering Ace’s face with kisses. “Such a good Daddy, love you so much.”
“Love you, too,” Ace responded easily.
He always would. Even with the way Sabo trampled over his boundaries and forced Ace to do whatever he wanted, Ace would always love his brothers.
It scared him, a little.
Luffy woke up then, though Ace couldn’t tell if it was the noise that woke him, the movement, or the smell of-
“FOOD!”
Ace chuckled, forehead dropping to rest on Sabo’s shoulder.
“Brought your favourite,” Sabo told him, leaning in to press a deep kiss to his mouth. “Entire roast for my darling boys.”
“Thank you, mommy!” Luffy grinned against his mouth, shifting to get off Ace’s lap.
“Slowly, now,” Sabo stopped him with a hand against his back. “How long have you been inside Daddy, huh? You’re gonna hurt him if you move so quickly-”
And the award for the most hypocritical sentence ever went to Sabo, the sadist extraordinaire.
Luffy shifted gently there and back until he managed to pull out, leaving his cock hanging out of his shorts as he rushed to the kitchen.
He was immediately replaced by Sabo’s fingers, hands bare in clear preparation. Ace wondered when he took his gloves off. If he pulled them off with his teeth the moment he entered the house-
“Luffy better not eat my portion,” he grumbled, his hips twitching with Sabo’s movements.
“I’ve got yours right here,” Sabo smiled, reaching with his free hand to grab a nearby container, placing it on his lap and popping it open.
Ace reached to grab something, but a warning grunt was enough to stop him.
“Let me do it,” Sabo said, but he was still holding the box-
Instead, he pulled out of Ace, using the fingers he just had stuffed down his cunt to pick up a morsel of food, placing it directly on Ace’s tongue.
Closing his lips around the digits, Ace moaned, tongue working to lick them clean.
He had only just reached for another morsel when Luffy burst out of the kitchen - now fully naked, as was his preference - holding a plate of the same food Sabo held in his container.
“Daddy, I got you some- oh.” He pouted as he noticed the Food on Sabo’s lap. “Mommy already got you food.”
The plate was meant for Ace. There were holes in the heaps of food where Luffy had taken impatient bites out of it, but to have his food-obsessed brother deliberately save him some-
They loved him so much.
Tearing up, Ace outstretched his arms towards Luffy. Sabo grabbed the plate as Luffy eagerly crawled into Ace’s embrace.
“You’re such a darling,” he wrapped his arms tightly around his brother’s shoulders, pressing kisses against his hair. “I love you so much.”
There was a hand sneaking between them, guiding Luffy back inside him.
“My perfect family,” Sabo breathed out, and the pure euphoria in his voice had Ace slick up.
The hand moved to feed Sabo’s fingers alongside Luffy’s cock, for just long enough to get his fingers wet before pulling them out, bringing a morsel of food in front of Ace’s face-
Only for Luffy to chomp forward, stealing it.
Ace couldn’t help but laugh at Sabo’s baffled expression.
“Baby’s hungry, huh,” Ace teased, stealing more food from the container to offer Luffy. “There you go, sweetheart, gotta have the energy to fuck Daddy later, yeah?”