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First Night

Summary:

Luffy and Law have acknowledged their feelings for each other and officially become a couple. And today is their first night together. Since Luffy has absolutely no sexual experience, Law takes the lead and guides him.

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This story shares the same background as my other story, [Brother-In-Law]. However, since the content of this story focuses solely on Luffy and Law’s sex, you don’t need to read the other story.

Notes:

Hi!
This is a prequel to [Brother-In-Law], set before the time travel. It’s the story of Luffy and Law’s real first night together.

As I mentioned earlier, you don’t need to be familiar with [Brother-In-Law] to enjoy this. But if thankfully you’ve become interested in Luffy and Law’s story, please be sure to read it. :D

 

English isn't my first language. My rather poor English skills and a brilliant translation tool rewrote my story in English, so there might be awkward words or grammar.

Especially with character's name or proper nouns, I'm not sure how they were translated in the English version of the manga. If you spot any errors, please let me know and I'll fix them.

(See the end of the work for more notes.)

Work Text:

 

Law crawled up onto Luffy, who was lying on the sofa. Omega stretched his back as flexibly as a cat stretching, and wriggled his body as sinuously as a snake climbing a tree. This was the first time Luffy had seen Law completely naked, without a single piece of clothing. His skin was covered in various tattoos and scars. Even the tattoo on his chest, which he’d seen many times before, felt more provocative today. 

 

After a series of slow movements, Law finally settled into position. Between Luffy’s stomach and groin. Right above the young Alpha’s genitals. The young Alpha’s pupils dilated with intense excitement. Law didn’t miss the change. Luffy swallowed hard and covered his flushed face with his arms. Law chuckled at the young Alpha’s adorable reaction. 

 

“Do you like it?”

 

Luffy nodded frantically. 

 

Law straightened his back and rubbed his flat buttocks against Luffy’s genitals. Through the fabric, he could feel it was already fully swollen and erect. Luffy’s breathing quickened in time with his movements. The inexperienced Alpha’s pheromones gushed out wildly, craving the Omega before him. Law skillfully blended his own scent with it. 

 

“Luffy-ya, this is your last chance to stop.”

 

“No, no, no, no. I’m never gonna stop. Never, ever.”

 

Golden eyes narrowed, and the Omega licked his lips. Luffy’s body heat felt even hotter than usual. Law leaned forward. Unlike Luffy, Law’s fingers—still cold—wrapped around Luffy’s face. Ten fingers, each etched with death, covered him like a net. Law leaned in even closer. Then he waited, doing nothing, for ten seconds. A moment that felt like an eternity. He could feel Luffy’s tension with every fiber of his being. 

 

Was it to breathe, or to speak? Whatever the reason, Luffy’s lips parted. Law pressed his lips against them. A damp tongue brushed against the Alpha’s, tickling the roof of his mouth. The Alpha did his best to recall what he’d been taught and followed Law’s lead. Luffy still wasn’t very good at kissing. His tongue, which stretched too easily, didn’t help either. 

 

The kiss went on. Alpha stared blankly as the Omega’s golden eyes quietly hid behind his eyelids and then emerged again. They looked like the jewels Nami had boasted about, or like the setting sun. When Luffy stopped moving, Law pressed his lips briefly against Alpha’s a couple of times.

 

"What?"

 

“Just… because you’re so beautiful.”

 

“You know how to say things like that?”

 

Close enough to feel each other's breath. A whispering voice. A chuckle. Desire rising to its limit.

 

Law pressed his lips to the tip of Luffy’s nose once more and straightened his back. Omega spread his legs and gripped the sofa with one hand to steady himself. The sofa was narrow, so Law’s long legs had to be tightly tucked in. The position was uncomfortable, but it was the best option given the circumstances. 

 

Luffy’s breath caught in his throat as Omega’s pussy spread openly before his eyes. Law found Luffy’s reaction amusing. 

 

Law dug his hole with his long index finger. The well-trained opening swallowed his finger without much resistance. He moved his finger while deliberately letting out exaggerated moans. He inserted another finger, widening the opening as if scissoring. His fingers, etched with the mark of death, glistened with fluid, and his thighs grew increasingly tense. Luffy watched the entire scene, as if he’d forgotten how to close his eyes. 

 

“Wanna try it? Just so you know, no Gear Third.”

 

Law chuckled. He shifted his hips and legs to make Luffy more comfortable. Luffy awkwardly fumbled for Law’s penis with his hand. Just as Law had done moments before, he inserted his index and middle fingers into Law’s vagina and moved them slowly. 

 

“Is this right?”

 

“Haa, yeah… Just a bit faster.”

 

“Luffy obediently followed his instructions. Law also gave him detailed instructions on how to bend his fingers and when it was okay to use more fingers. Even with the inexperienced Alpha’s movements, Law quickly became aroused. Is this the difference in emotions? Law wondered to himself.

 

The Omega’s words grew increasingly broken, and his breathing became ragged. Along with Law’s habitually stifled moan, his legs suddenly clamped shut, wrapping around Lupi’s arms. Luffy’s red shirt was completely soaked with Law’s fluids. The Omega slowly exhaled deeply amidst the orgasm. Luffy, who belatedly realized what he had just heard and seen, broke into a huge smile. In return for the orgasm, Law pressed a brief kiss to Luffy’s cheek. 

 

“Now it’s my turn to serve.”

 

Law straightened his back and pushed himself up on his knees. He stripped Luffy of his pants and underwear in one swift motion and tossed them under the sofa. Alpha’s massive cock greeted him. As Luffy squirmed impatiently, he pushed Luffy’s shoulders with his palms and said,

 

“Stay still. I’ll let you have it in a second.”

 

He took a condom out of the box and tore it open with his mouth. Doflamingo rarely used them when having sex with him. Law also didn't care whether he used one or not, as long as his partner didn't have an STD. But since this was Luffy's first time, he thought it would be best to use a condom properly for the sake of sex education. 

 

To teach Luffy how to use a condom, Law deliberately and slowly rolled it onto his penis. Luffy stared at the scene with a face so red it looked like it might burst. He felt a strange sensation. Had he developed a condom fetish? Or was Law just too hot? Luffy was confused.

 

Law rubbed his condom-covered penis up and down a few times, then slowly sat down on it. Luffy hadn’t used his Devil Fruit powers at all, but it was big enough that Law reflexively let out a small curse. He pressed his right palm against Luffy’s firm chest to support himself as he pushed his penis all the way in. Eventually, the walls of Law’s vagina swallowed Luffy’s cock whole. 

 

The hole that had swallowed his cock stretched taut. Unlike his hands, the inside was truly warm. Luffy let out a ragged breath at the pleasure he was experiencing for the first time. 

 

“To, Torao. This, Yours feel good , huh….”

 

How adorable. Satisfied with Alpha’s reaction, Law twisted the corners of his mouth. It was that wicked smile Luffy loved so dearly. Law grabbed Luffy’s hands and pulled them around his waist. Then he moved his hips skillfully. Up, down. The two men’s body heat, scents, and pleasure mingled together. The sounds echoing from Luffy’s throat were worth it all on their own.

 

The faster Law moved, the tighter Luffy’s grip became. It was filled with possessiveness, and though it hurt a little, unlike his former master, there was no intentional violence behind it. No bruising marks, no thread-like shackles. As Law carefully lowered his body, Luffy responded by kissing him. Lips, cheeks, chin, neck. It continued without pause. All he felt was pure affection and connection. 

 

Their words grew fewer, and the friction quickened. Luffy instinctively moved his hips in sync with Law’s movements. As the motion grew more intense, the crude sound of flesh slapping together echoed. Luffy’s desperate voice calling out to Law could be heard again, and in that instant, Luffy’s body tensed up. 

 

“Ah, um… ...Huh? That’s a bit fast.”

 

“Don’t tease meee… It’s your fault, isn’t it?”

 

“You’re saying it’s my fault?”

 

Law chuckled as he looked at Luffy, who had come quickly. Hiding his disappointment behind teasing words directed at Luffy, he lifted his hips and withdrew his penis. Luffy’s penis was (naturally) still standing stiffly erect. Law removed the condom filled with semen and took out a new one. 

 

“Luffy-ya, one more time?”

 

“Of course!”

 

At the unhesitating reply, Law laughed again. Since his orgasm had been cut short, Law was also incredibly eager. As he quickly put on another condom and sat down on top of Luffy, Luffy looked a little disappointed for some reason. 

 

Compared to the first time, the penetration went smoothly. Law rubbed his cock against his own buttocks before gently taking it in. Luffy, perhaps having relaxed, moved more naturally. As Law began to move again, he kissed the self-harm scars on Law’s arms and tickled his chest along the lines of his tattoos. The tickling caresses made Law’s moans even softer. 

 

Lost in pleasure, his voice was higher than usual. Luffy liked hearing his new voice. When Luffy reached out to Law, Law let himself be embraced without resistance. Their skin pressed together seamlessly. As they held each other, their moans grew sweeter and their pheromones felt even more intense. The honest, unfiltered pheromones spreading between them aroused them anew. 

 

“Mmm… Ah! Huu, there, there, that feels gooood, mmm!” 

 

Law cupped Luffy’s cheeks and urged him on. Luffy moved quickly to meet his demands. The Omega’s insides tightened, and his thighs trembled. With every skilled movement Law made—that is, every single moment—Luffy felt a burning desire. He wanted to please his Omega and fill him completely.

 

The sofa creaked so loudly it was almost pitiful. Lips met lips, and tongues entwined. They traced each other’s scars and rubbed their skin together. Feeling Law teasing him with his tongue, Luffy grumbled in frustration. Unable to focus properly, Luffy’s kiss was even more clumsy than usual. To Law, the inexperienced Alpha was nothing but cute.

 

The lewd sounds of flesh slapping against flesh grew increasingly erratic. Both Luffy and Law could feel their limits approaching. 

 

“I wanna cum, I wanna cum, please. Ah, h-h-h-h. Too much, ah!”

 

As the peak of pleasure approached, Law habitually asked for permission. He twisted his entire body with his eyes tightly shut. Luffy’s stretched-out rubber arms warmly squeezed Law. 

 

“Cum for me, Torao. For me, with me.”

 

It was desperate and warm. 

 

The two came while embracing each other. A languid feeling spread through their ragged breaths. Luffy gently and playfully rubbed his cheek against the Omega’s. Law quietly savored the afterglow. Luffy nuzzled him and held him tight, but let Law rest for a moment. To Law, it felt like a luxury he didn’t deserve. 

 

A few minutes later, Law sat up. As Law slipped out of his arms, Luffy whined in protest. Law could still feel Luffy’s hardness standing firm inside him. 

 

“You’re healthy, Luffy-ya”

 

“Huh? I’m healthy.”

 

“You idiot.”

 

Not understanding what Law meant, Luffy gave him a look that said, “Of course I am.” Law chuckled at his innocent face. 

 

Luffy thought that the amount of laughter he’d heard from Law tonight seemed to be more than he’d heard from him over the past few months. Law always hid his emotions. Yet, he always had a gloomy expression. His pain and sorrow were so deep that no mask could conceal them. 

 

Luffy reached out and rubbed the dark circles under Law’s eyes. He rubbed the thread-like scar on his neck. He traced the tattoos etched on his chest and arms, and rubbed the scar on the arm that had been severed at Dressrosa. He rubbed the scars Law had carved into himself, covering both arms.

 

“Luffy-ya?”

 

“I love you.”

 

“...”

 

“I love you, Law.”

 

“That’s unfair.

 

Law quietly looked down at Luffy. Luffy was smiling gently. Affectionately, warmly. As if Law were the most precious thing in the world. 

 

Law still couldn’t agree with most of what Luffy had said to him. But now, he believed in just one thing. 

 

Contrary to Luffy’s words and thoughts, Law has no value. He isn’t clean; he’s just a broken-down junk. He’s weak and stupid. He isn’t kind. He isn’t lovable or beautiful. His scent was far more disgusting than the smell of cigarettes. 

 

Still, Luffy loves Law. No matter how dirty, ugly, or worthless Law is. He loves Law. 

 

Law bowed his head and kissed Luffy on the forehead. 

 

“I love you too.”

 

The two embraced each other. They showered each other with kisses, as if they were competing to see who could give more. Laughter grew louder amid the playful banter and caresses. Law pulled Luffy toward him and changed their position. He discarded the used condom and took out a new one. 

Notes:

P.S.
The two of them do it three more times after that and fall asleep in each other’s arms.

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