Chapter Text
Haruka has his first rut when he’s nineteen years old.
It’s not a particularly strange age to fully present. He’s actually a bit late compared to his fellow third-year alphas, Kiryu, Anzai, and Tsugeura, who had their own first ruts at seventeen, during the summer break. Of the three, Kiryu had fully presented first. Haruka remembers distinctly how worried the grade groupchat had been when the pink-haired boy had seemingly dropped off the face of the earth, not answering any text messages or calls.
When he finally returned, showing up at Kotoha’s cafe with scratched hands and a busted lip, Haruka had assumed he’d been attacked by some rogue team.
Give me their names, Haruka had growled at Kiryu, the other boy looking at him with an amused, but tired smile. I won’t let them get away with this.
Suo had placed a placating hand on his shoulder. Don’t worry. He wasn’t in any danger.
Then why does he look like that?
Suo had smiled at him serenely, his thumb rubbing Haruka’s shoulder. Ruts are painful, no?
Haruka, curled up naked above his bedsheets, biting his pillow and raking his fingers down his thighs so hard he draws blood, realizes that now.
He’s burning. It feels like a fever but worse, like he’s going to suffocate under the heat of his own skin. Scratching all over body, his nails digging cruelly into his own flesh, the sparks of pain distract him for an instance before the fever settles in again.
Worst of all, his dick freaking hurts. It chafes against his own skin, and when it grazes his bedsheets he chokes out a whimper, screwing his eyes shut and gnawing at his pillow like a wounded, feral dog.
He’s been like this for at least twelve hours now, with no sign of the rut receding.
It’s terrible.
His head is pounding. His stomach growls in hunger. He’s probably pissed himself, the disgusting fluid mixing with his equally disgusting sweat.
Haruka doesn’t realize he’s full-blown sobbing into his pillow until he feels a cool hand gently cup the nape of his neck, the scent of spring rain cutting through the fiery pain.
“Sakura-kun,” Suo’s gentle voice rings through the air. “Sakura-kun, let go of your legs.”
Haruka, still sobbing— what the hell— complies, digging his nails out from the deep, bloodied indents he’d made in his upper thighs. He doesn’t move as Suo, after grazing the nape of Haruka’s neck one more time, gently maneuvers Haruka onto his back and wraps a silky material around Haruka’s wrists, binding them together.
A couple beats pass. Instinctively, Haruka starts struggling, trying to pry his hands apart.
“Shhhh.” Suo gently raises Haruka’s bound wrists over his head, making his arms fall over the damp surface of his ruined pillow. Then Suo climbs over his abdomen, straddling him. He leans forward, so close that his mouth is hovering over Haruka’s neck, his tassels grazing his clavicles. He looks Haruka straight in the eye. “I’m going to help you. Will you let me?”
Haruka nods quickly, firmly, breathing heavily. His face is bright red, and sticky with tears and snot.
“Good boy.”
Haruka chokes on a sob as Suo’s mouth descends, sucking hickies into his neck. He works meticulously, marking up each square centimeter of skin he can get his lips on. The stinging, pleasurable sensation is leagues better than the relief from the pain of his nails puncturing into his skin—whereas Haruka had tried clawing the fever out of himself, Suo seems to be sucking up the poison through his flesh.
Haruka’s breath catches when Suo moves down, biting his collarbone. Moves lower, taking a nipple into his mouth and suckling hard.
“Ow!” Haruka hisses. “That freakin’ hurts!”
Suo releases him, smiling at him much too gently. “You can talk now, hmm?” And he descends again, focusing on his other nipple, his free hand reaching up to rub circles over its twin bruised, bitten one, and Haruka rasps and hisses and snarls and growls and sobs and moans and—
Suo releases him.
Gets off his abdomen.
Kneels between his thighs, gently prying them open. Tsks, as his slender fingers flutter over the self-inflicted, idly bleeding welts.
“After I get you to knot,” Suo says, his smile serene but eyes dark, “we’re going to get you into a bath, hmm?” Without waiting for a response, Suo leans down over his cock, his mouth opening—
“Wait!” Haruka shouts, and Suo pauses. “I—” He stops, his throat itchy from overuse. Face even redder than before, he continues, “It’s—dirty.”
Suo nods understandingly. “I see.” His fingers trail down, poking at his asshole. “Do you think you can come from here?”
Haruka looks up at the ceiling, determinedly away from his friend. “I’ve never tried.”
Suo smiles sweetly. “Never?”
Haruka winds his head back. “I already said that, you asshole!”
“Do you want to try?”
Haruka inhales heavily. Counts to ten. Down from ten. “Yes.”
Suo unbuckles his trousers. He slides them down to his knees.
He’s commando.
Haruka glares at Suo’s cock, impressive and girthy for someone so slight. “Did you come here knowing you were gonna fuck me?”
Suo pats Haruka’s cheek gently. “I stretched myself too, in case you wanted to fuck me.”
Haruka grumbles.
“Hmm. What was that?”
“Later,” Haruka spits out. Later, when he can feel his legs again, when the pain isn’t paralyzing him anymore. Even if he wanted to knot Suo traditionally, he can’t, unless Suo feels like riding him—
“Later,” Suo repeats, his eye twinkling. He taps Haruka’s hip. “Are you ready now, alpha?”
“Don’t call me that.”
“Sorry,” Suo says. “Are you ready now, boy?”
“I’m going to kill you—”
“I’m not touching you until you say that you’re ready.”
Haruka huffs, chewing his lower lip angrily. “...I’m ready.”
Suo plucks out a tube from his back pocket, squirting some lube over his fingers. He warms it up, slicking it over his cock before he shoves the same slick fingers into Haruka’s asshole.
“Wow,” Suo purrs. “It’s going in so easily. Do you play with yourself a lot?”
Haruka splutters, his wrists twitching against his bounds. He really doesn’t touch himself very often. And when he did, it was quick, guilty. Almost shameful.
Fingers still in Haruka’s ass, Suo leans down and kisses him.
“Sorry, I was just teasing you,” Suo whispers against his mouth.
They spend a few minutes kissing each other, Suo’s fingers pumping in and out of him languidly.
When they finally part for breath, Suo takes his fingers out, lining up his own cock. He taps the hot tip against Haruka’s hole. Rather than adding onto the heat under his skin, it feels… soothing.
A breath passes, and Suo thrusts into him. Haruka moans lowly, rocking back against his friend.
Fingers wrapped tightly around his spread thighs, careful of the welts, Suo fucks him to a slow, steady beat. Haruka might have even called it lazy, except for the fact that he manages to hit his prostate consistently, inciting choked-off, breathy moans.
“Our leader’s so pretty on his back,” Suo coos. “Who would have thought, hmm?”
“Shut up,” Haruka slurs, his mind dizzy with pleasure, “and fuck me harder.”
Suo’s eye glints. “Of course, alpha.”
Nearly twenty minutes pass like this—Suo between his legs, now fucking him almost violently, like they were fighting, hips slapping against Haruka’s ass. His stamina is both impressive and unnerving, and Haruka thinks they can probably spend a good hour like this, stuck in this limbo of fucking and fighting and a toe-curling pleasure that completely encompasses the fever-pain.
Then, all of a sudden, Suo wraps his fingers around Haruka’s cock.
“Knot my hand, boy.”
Haruka feels the base swelling. “When can I—you—”
“After you bathe, eat, and rest,” Suo promises, timing his thrusts with each stroke to Haruka’s cock. “I would have let you knot my mouth, but you said it was dirty.”
Haruka stays silent, blinking away an onset of tears. Just as a few tears escape, Suo leans down and licks them.
Haruka’s heart is racing.
Head lifting, a lone red eye meets Haruka’s equally mismatching ones. Suo shoots him a breath-taking smile.
“Be a good boy and come, Sakura-kun.”
And Haruka’s vision whitens.
Several minutes later, Haruka wakes up in a bathtub, waist-deep in warm water. He feels hands in his hair, scrubbing gently at his scalp.
“Oh? Is my alpha awake?”
Haruka splutters. “I’m not your—your—”
“Hmm?” Suo says, his slender fingers pinching the nape of his neck gently. Posessively. “What was that, alpha?”
Haruka’s cheeks redden. “...I told you not to call me that.”
“Oh, right. Sorry, Sakura-kun. It’s just so nice to say,” Suo says. “What would you like me to call you then? Oh— boy? My good boy? How about—”
Huffing, Haruka reels around, glaring at Suo, who raises his soap-covered hands innocently. “...Haruka.”
“Haruka-kun?”
“...yeah.”
“Haruka-kun,” Suo repeats. “Haruka-kun, my Haruka-kun, oh, I like that!”
Haruka grumbles.
“Sorry, what was that?”
“Thank you,” Haruka says. “For helping me with my rut. It really sucked, until you made it feel—”
“Good?”
Haruka feels Suo’s fingers return to his hair, continuing to scrub. “Yeah.”
They sit in silence for a few moments.
Then Haruka feels a warm breath against his ear.
“Your rut’s not over yet, you know.” A slender, sudsy finger on his chin turns his head, and Suo kisses him, soft and sweet. “You have me for the rest of it. And after.”
In response, Haruka bites into Suo’s mouth so hard he draws blood.
Suo laughs against him in delight, licking at the seam of Haruka’s lips.
(For a beta, Haruka muses later as his friend straddles him, sliding down on Haruka’s cock with a serene smile and every intention to take his knot, Suo is far from passive.)