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Miya Osamu did not want to be at this fucking Halloween party.
The only reason he was here, in a stupid half-assed fox costume that was mostly a partial shift, was because the party was literally being held in his fucking house. Bokuto and Kuroo — his shifter friends that he’d moved in with freshman year — had volun-told their house to host the campus Halloween bash after The Incident last year. They’d volunteered through some shifter on the board of directors so the school would know everything was above board, and that there would be subtle “security” so that no one would get roofied or some shit like that.
Speaking of, Osamu watched from across the room as some creep dropped something in a tall, dark-haired guy’s drink. Osamu was a little pissed, actually. He couldn’t have been a little more subtle? Ugh. What a dick.
Even more infuriating, he watched as the victim, dressed in an absolutely sinful short little angel costume that was slitted on the sides and showed all of his thighs and a flash of his ass when he moved, started chugging his drink while Osamu was still shoving his way through the people dancing.
Are you fuckin’ kiddin’ me? he thought, as he finally pushed past the last person and came to a stop next to the angel costume’s shoulder.
“Y’know he roofied that, yeah?” he asked, as loudly and obnoxiously as possible.
The angel turned to look at him and blinked at him. He knew that face. He had burned that face into his memory thirteen years ago as it was sobbing hysterically while being carried away and put in a car. Suna Rintarou had been his first love. When he’d left, Osamu had been so devastated that he had hidden in his and Atsumu’s room for three days. His parents had had a conversation about fated mates with him, and promised to try to reach out to Rin’s parents to see about keeping them in touch. They never heard back.
Now, thirteen hopeless years later, a twenty-something Rin was standing a foot away from him, even more gorgeous than he remembered, head tilted and dark eyes searching his face. His familiar citrusy scent curled around Osamu and settled sharp and spicy in his nose. Mate, his fox whined, sitting up in his mind and begging. Mate, mate, mate. Claim him.
“Rin,” he whispered, his teeth itching as he resisted the overwhelming urge to drag him upstairs and claim him.
Suddenly, Rin’s face lit with recognition. “Osamu?” he asked, his hand reaching up and catching Osamu’s wrist, who shuddered at the contact and the rush of lust it sent through him. “Holy shit,” Rin was saying, squeezing his fingers and tugging Osamu closer. “I can’t believe it! It’s really you! Oh my god, how are you? I haven’t seen you in forever!”
Osamu couldn’t resist letting Rin pull him closer and took several deep inhales of his scent. He pulled his arm free, then wrapped both arms around Rin’s waist in a tight hug.
“Rin,” he murmured into his ear, holding him as close as he dared, still inhaling his scent. At the sound of his name, Rin shivered and wrapped his own arms around Osamu’s shoulders, tucking his face into Osamu’s neck.
“Hi,” he said into Osamu’s neck, “I missed you so much.”
Osamu grinned, then remembered why he’d made his way over here in the first place. Luckily, the creeper was still hovering, but he’d apparently targeted someone else, a petite blonde girl in a devil costume standing a few feet away from Rin, and looking extremely uncomfortable at the conversation she’d been cornered into.
Osamu saw Atsumu making his way towards the kitchen, so he whistled to catch his and Sakusa’s attention, and motioned to the creep with his head. Atsumu caught on immediately, like he always did, with only a raised eyebrow at Rin clinging to him, and they redirected to grab the guy.
Rin was practically melting into him. Osamu squeezed his waist, then leaned back enough to see his face. “Hey, that guy earlier roofied you,” he said, sliding his hands around to rest as gently as he could on Rin’s hips.
Rin blinked, then grinned. “I know. I saw him put the pill in my drink.”
Osamu blinked. “And you still drank it?”
“Yeah. I figured one of you shifters would catch it. Super senses or whatever,” he said with a shrug, draping his wrists over each other behind Osamu’s neck.
“Yeah, well, we’re actin’ as security — I’m sorry, you know I’m a shifter?” Osamu asked, hands tightening on Rin’s hips.
Rin’s grin did that thing from when he was a kid and was coming up with some evil plan. “You weren’t exactly subtle when we were kids, and I met some other shifters in Miyagi. Shou blurted it out like two weeks after we became friends.”
Osamu took that information in for a moment, considering his options. He’d never thought he’d get to see Rin again, let alone a Rin who knew what he was and accepted it. Maybe Rin could accept being mates as well. Fuck it, he thought.
“So if I said we were mates, you’d understand the implications of that?” Osamu asked, watching closely for Rin’s reaction.
He went stiff, eyes widening and sly grin dropping off his face. “I would,” he said, softly. He didn’t let go of Osamu, but he wasn’t relaxed anymore. “I think we should have this conversation somewhere else. Also, I’d like to be sitting down somewhere safe when the drugs hit me.”
“Right,” Osamu said. “We can use my room. It’s soundproofed.”
Rin frowned at him. “Why? So your roommates can’t hear you fucking your plethora of bitches?”
Osamu sighed, and used his grip on Rin’s waist to pick him up, making him shriek and wrap his legs around Osamu’s hips. “Yeah, right.”
Rin leaned his weight into Osamu, his nose pressing against his throat. “I missed you, Samu.”
“I missed you, too.” Osamu answered, raising an eyebrow at Bokuto practically fucking a pretty dark-haired guy in the middle of the living room as he passed by to tromp up the stairs, swinging around the staircase into his room, kicking the door shut, and reaching out to flip the lock. “Felt like I was missin’ a piece of m’self with you gone.”
“Sap,” Rin said fondly. Then, a little sadly, “My parents moved me because they found out you guys were shifters. That we were mates. Your parents left a voicemail, I guess. Mother had a bad experience with a shifter as a teenager, apparently, so they hated shifters.”
He let Osamu set him on the bed, waiting patiently while Osamu turned on the lamp on his desk. “The joke is on them, though. I ended up at a school practically oozing shifters from the seams and right back into your life.” Rin grinned at him, leaning back on his hands, the hem of his dress pulling up indecently far.
Osamu came to kneel down in front of him, laying his chin on Rin’s knees, wrapping his hands around his ankles. “Right back where you belong,” he said, soft.
Smile turning soft and warm, Rin reached out and stroked his fingers along Osamu’s temple. “I’m so happy. I feel… full. Like a puzzle piece snapped into place.”
Osamu kissed his knee. “Good. You should feel like that.” Then he sighed, leaning his cheek against Rin’s thigh. “Much as I want to, I’m not gonna touch you sexually until the roofie wears off. I don’t want you to not remember.”
Rin made a face. “Even if I want you to? I wouldn’t mind, if it was you.”
Osamu shook his head. “No. I wouldn’t feel right about it. And I want you to remember bein’ claimed. ‘Cause that’s what I’m gonna do. Claim you. I’m not losin’ you again.”
“You fucking romantic,” Rin sighed. “You’re right, of course. We’ll wait. But not too long, yeah?”
“Not too long. Can I… just stay like this for a bit?” Osamu asked, thumbs rubbing over the protruding bone of his ankle.
“Can do whatever you want, Samu.” Rin’s face was open, vulnerable. Genuine. He meant it, and Osamu could smell the sincerity on his scent, with a tinge of relief, and a heaping pour of joy.
Osamu stayed there with his head on Rin’s thigh until Rin started to feel the roofie, swaying and twitching. “Samu? I want to lay down.”
“Okay,” he said, moving slow and careful, laying Rin down in his bed, tucking the covers around him. “How’s that, love?”
“Better. Stay with me, please.” Rin grabbed at him, pulling him into the bed. Osamu laid on top of the covers, holding Rin’s hand tight.
“I’m not goin’ anywhere, Rin. Just relax, and I’ll keep you safe.”
Rin smiled, eyes fluttering shut. “You’re s’good t’me,” he slurred, hand limp in Osamu’s as he immediately sank into sleep.
Osamu watched him sleep for a little bit, staying close as requested, and closed his eyes, a soft smile on his face. His mate, home. Back in reach, and willing.
~~~~~~~~~~~~~~~~~~~~~~
Osamu woke up to a hand smacking him in the face, then a warm body throwing itself onto him. He laughed softly, then wiggled until he could wrap his arms around Rin, who immediately folded into him.
“Mmph,” Rin said.
“Good morning, love,” Osamu whispered, and got a grunt for his trouble.
“Not yet,” Rin groaned, clinging tighter.
Osamu grinned, and settled his hips against Rin’s, pressing his dick into Rin’s hip, unashamed. He buried his nose in Rin’s throat, a pleased hum escaping as he inhaled that sweet scent.
“Oh. Maybe now,” Rin murmured, pressing back, tilting his chin up to give Osamu more room.
Osamu kissed over his throat, hands wandering as he kissed and licked at Rin’s throat. “You smell s’good,” he murmured between kisses.
“Yeah? Am I the best thing you’ve ever smelled?”
Osamu paused, and Rin gasped, already knowing what he’d say despite the years of separation. “Lie.”
With a grin and a chuckle, Osamu answered, “Yes. The very best. Your scent haunted my dreams, Rin. You haunted my dreams.”
“You fucking sap,” Rin said, flushed and smiling hopelessly. “I missed you, too.”
Osamu grinned, then slid his fingertips under the hem of Rin’s skirt, up his thigh, hand sliding much further up than he thought before he made contact with a strip of fabric. He paused, mouth still sucking marks into Rin’s throat. “Is that… Are you wearing a thong?”
Rin swallowed, and let out a nervous chuckle. “Uhm. Yes? I… didn’t want any panty lines?”
“Fuck, you’re hot,” Osamu murtered, snapping the fabric against his hip before pressing him down onto his back. “Can I see?”
Rin’s face was bright red, spreading down his throat and chest. “Yes. Just… don’t laugh.”
“Of course I won’t,” Osamu said, sliding the tiny dress up to reveal the barely there fabric in a creamy, off-white color, straps lacy and tight over Rin’s hips. “Fuck…” he muttered, hands spread over Rin’s stomach.
Rin helped him get the dress off, and then his own clothes, scattering them around the room. Rin grabbed at his arm, gentle and a little nervous tinge to his scent. “Can we… Will you lay back down?”
“You want to face each other?” Osamu asked gently.
“Yes, please? I know that might fuck up the — the bite, but I want to look at you,” Rin said, rushing his words together, cheeks pink.
Osamu grinned, a flash of fangs for him. “The bite. You want me to bite you?”
Rin reached up and smacked him — hard — on the side of the head. “Quit being a dick, lay down, fuck me, then sink your teeth in, you bitch.”
Osamu laughed, loud and deep, but did what he was told. “I can put my teeth wherever you want them, baby. It’s about the intention.”
He didn’t let Rin answer, just leaned in to kiss him, hand sliding over his throat. He reached down, and hooked Rin’s leg over his hip, the other hand grabbing at his ass. Rin leaned into it, into him with a soft moan. They kissed for what felt like forty years before Rin bit Osamu’s lip, rocking their hips together.
“Stop teasing,” he whispered, a little whiny.
Osamu pressed a kiss to his cheek, fingers still holding his throat. He reached back, taking Rin with him, grabbing the lube Atsumu had so kindly stashed in his nightstand before the party. He handed it to Rin, who popped it open and poured some into Osamu’s hand.
Osamu got to work — teasing, of course — tracing around Rin’s hole for a bit before working one finger in and crooking it, moving torturously slow. He was enjoying all of Rin’s little noises, whines and whimpers and moans.
He had three fingers in when Rin gave in, crying out so loud that Osamu was grateful they’d shelled out for soundproofing. Rin’s hand slid down his chest, down his stomach, wrapping around his dick even as he shuddered and clenched around Osamu’s fingers.
Osamu let him touch, but knocked his hand away gently, pulling his fingers out. “I’ll come when I’ve marked you.”
He pressed his dick into Rin, one inch at a time, gums itching, knowing his knot was seconds from popping. “I’m sorry, Rin,” he panted, bottoming out and letting him adjust. “I’m not gonna last at all.”
Rin kissed him. “Just mark me,” he whispered, holding back whimpers while Osamu fucked him, hips snapping involuntarily.
Osamu did not last long, and came with a groan, shoving his knot in, hips twitching just barely in. He sank his teeth into the sweet, warm-smelling spot on his shoulder where it met his neck. Rin practically screamed, coming again.
Osamu shook, pulling his teeth out and licking over the wound. It would be a pretty scar. “You okay?”
Rin just laughed, holding on to Osamu’s shoulders, panting. “So good. So— Yes.”
Osamu kissed him, sweet and gentle. “Good.”
“I missed you so much,” Rin said, touching Osamu’s cheek, smiling warmly.
“I’m yours forever,” Osamu answered, leaning into his touch. He would be Rin’s forever.