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The funny thing is, Sae would have continued sleeping if Rin did not bite him.
He has never been a particularly heavy sleeper; if anyone else so much as touches him, he would shoot awake immediately, glaring at them viciously until they cower and fuck off. That is how he survived in a semi-communal living environment, language barrier and all.
For better or for worse, Rin has always been the exception. Perhaps it was the blood running through their veins, almost parallel genes visible in more than their eyes and lashes. Perhaps it was the years of Rin tucked into his side, from when Rin was barely weaned to now, when Rin towers over him.
Perhaps it was even from the way Sae allows Rin to sheathe himself inside almost every night, grants his little brother the pleasure of servicing his god — Rin has never called him that, but actions speak louder than words. Rin would forsake any higher at a single word of Sae’s. In turn, Sae rewards him: Rin gets to spill inside when he’s been good, and if he has been especially obedient, Sae humours him by smearing his cum over Rin’s face, abs, thighs — and letting Rin do the same to him.
One way or another, his body accepts Rin’s touch. Even when Rin panted hotly against his ear or ruts against his ass, he did not stir at all.
The only reason he knows this is because he caught Rin in the act once, when the call of nature unexpectedly woke him up. The next night, he set up his phone to record the noises. From the audio, no one would have thought he was in bed with his brother. All that could be heard was a filthy, horny mutt.
If it was the off-season, Sae would have taken care of that issue there and then. But they have matches to play, and Sae was feeling benevolent enough to excuse Rin’s behaviour in view of their lack of fuckportunities, as their mutual friend Shidou so kindly puts it.
Sae is not feeling particularly benevolent now. Especially not after waking up to the sharp pain of Rin’s teeth sinking into his neck, leaving behind a throbbing ache and a trail of wet slobber.
In typical mutt behaviour, Rin has not noticed him. His head is buried between Sae’s thighs as he returns to his task of sloppily eating Sae out while humping the bed. From how wet it sounds, Sae can only assume he has been there for a while.
Disgruntled and still a little sleepy, Sae kicks Rin in the side with a little more force than strictly necessary. On cue, Rin yelps, cowering back to rest on his knees, hands finding their rightful place on his thighs. Through the thin layer of nightwear Rin dons, Sae can see the outline of his dick, standing so tall it might as well be the osha guy that used to play with Rin.
At least he knows he fucked up, Sae muses. His dearest little brother really does try to be a good boy. He just needs some help to remain good, or his stupid little dick will start making stupid little decisions for him.
Sae jerks his head to the floor pointedly.
Rin whimpers.
Quickly, Rin strips off, then slides off the soft mattress and onto the hard floor. It is not their first rodeo — he knows to wait there, hands crossed behind his back, knees spread, eyes to the ground. At least it is only the hard floor boring into his knees this time, not uncooked rice grains or something worse.
Easily ignoring the pitiful puppy on the ground, Sae stretches his muscles as he ambles to the bathroom to freshen up and take a good look at the bite mark. He needs time to think of Rin’s punishment anyway. Or perhaps not a full punishment this time; Rin’s been so good lately.
Something for a good boy who requires a little external help to not be greedy and naughty. A little device to aid his brother in following the orders of his better, who always knows what is best for him. And a small punishment to top it off, because Rin still broke the rules.
Sae walks out of the bathroom to find Rin in the same position — not that he expected anything else; Rin has never been one to brat, and he is certainly not starting now. Sliding a single finger under Rin’s chin, Sae tilts his head up.
As anticipated, tear tracks were clearly visible. Another drop leaves the eye, gliding down Rin’s cheeks like a newly-renovated train on a newly-renovated railway. Sae likes trains. He also likes to watch Rin cry.
“Do you have anything to say for yourself?”
Rin swallows hard, more drops departing from the eye station. “I’m sorry, Nii-chan…”
“No excuses? You knew what you were doing, touching me with your filthy mouth without permission?”
A guilty nod.
“You knew you’ve been humping me like a dirty, untrained mutt for weeks?”
Rin hiccups, then nods again, head hanging low.
“We’ll be going to The Shop again today,” Sae says. He trusts that Rin knows which one he is referring to. “Since you can’t control yourself, I’ll have to do it for you. We’ll lock that troublesome thing up. Don’t worry, I’ll unlock you if I want to use it. If not, well, your mouth is still open, and we have toys.”
Rin’s hips jerk. Little Rin is clearly interested. Regular Rin probably appreciates the opportunity to be even better for him, though he will likely grow to love and hate it in equal measures. Rin has such a high libido; Sae knows he jerks off at least twice a day too.
“Thank you, Nii-chan.”
“For your punishment, you won’t be touching me for the next two weeks.”
Rin’s head snaps up. Oh for the love of god, Sae is not that cruel.
“In bed,” Sae clarifies. The panicked look does not cease. “Sexually.”
Immediately, Rin relaxes again. He still looks like he wants to protest; pleasuring his Nii-chan is his favourite activity. The inability to bring Sae any pleasure is far harsher a punishment than not being able to grant himself any, but it would not be a punishment if he likes it.
Sae lies back down on the bed, and spreads his legs. He beckons Rin over.
“Your punishment begins later. You got me worked up in my sleep, come and deal with it now.”
Rin’s eyes widen and he scrambles up the mattress. “Thank you, thank you, thank you.”
The chants of apologies and gratitude continue even as Sae lazily orders him about. Sae lets him. Just because Rin is being punished does mean he will deny himself a nice morning fuck when he is in the mood.
Besides, Rin will not be coming. Sae cannot wait to see his desperate face when he realises.