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Raging Instinct

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It was as if time had just stopped.

The silence had reigned for several minutes already, the room quiet except for Ichimatsu's slow exhales in and out, sounding almost like a melody to Karamatsu. They were both in the same position as before.

Karamatsu was acutely aware of Ichimatsu’s messy hair caressing his ear, his breath against his neck, hot forehead pressing into his skin. His younger brother’s body shivered and trembled against him, and Karamatsu could even feel the hard pressure on his crotch from Ichimatsu's incessant boner.  

The urge to touch him was incredibly strong, but the older brother shook his head to keep his mind clear, even though he was starting to feel really strained from holding himself back. He started to breathe deeply through his nose, still aware of the hardness against his crotch.

Karamatsu couldn't deny that his own was starting to stiffen in response...but how could anyone blame him?

He had to do something before he couldn't handle it anymore.

He leaned a little forward, putting his left hand on Ichimatsu's shoulder, raising his head to his level and looking at his face.

“Hey, Ichimatsu...c-could we maybe...get up now…?”

Ichimatsu wouldn’t meet his eyes, his own gaze stuck on Karamatsu's neck. He looked...full of despair. The younger brother said nothing, just continued to stare the empty room.

However, his gaze finally snapped up when Karamatsu carefully grabbed his hips in order to pull him off— Ichimatsu immediately reached for the side of his brother's hoodie by his right hand, stopping Karamatsu’s movement.

They exchanged a long, silent look...

Karamatsu's mind had already turned itself over a thousand times. He gently placed his right hand across Ichimatsu’s eyes, grabbing him by the shoulder with his left hand, lowering his face downwards.

“Stop looking at me like that already...I...I don't want t—”

Karamatsu’s words were cut off by a wet feeling against his fingers. He'd pulled his hand off from his brother's eyes, then his felt his own widen when he got a look at him—Ichimatsu was crying without blinking, impassive, except...except for a slightly eager look, a desperate look, his breathing picking up erratically, as if he was about to die.

“K-Karamatsu...K-Kara...” Ichimatsu started to stutter his brother’s name, over and over, through his disjointed and uneven breathing, unable to speak clearly, tears dripping slowly down his face. His body was starting to almost spasm against Karamatsu’s.


It was the first time that Karamatsu seen his brother like this. Or maybe only once before, if at all. He was full of confusion, but also…happiness, strangely? It was like he was being favored for once, and he felt even more desire than earlier.

But, he quickly reminded himself— he is not himself right now...

Karamatsu had been about to lose his self-control, but this thought woke his brain back up—Karamatsu did not want to defile his brother, betray his brother, against his brother’s will.

Confronted by the reality of the situation, he felt like he was about to start crying. He was torn between the urge to touch Ichimatsu and the desire to keep him safe from the others...but could he even protect him from himself?

Karamatsu ended up shuddering as well, putting both his hands over his bruised face.


“I’m begging you...d-do some...thing...”

The broken words resonated in his head with an air of finality. He dropped his hands from his face and looked at his younger brother quietly, with an undefinable look.

It felt like his heart stopped for a second. Here was the moment he had feared—the fact that he couldn’t handle to see his brother so sad and desperate, combined with his nature’s eagerness due to the unending rate of pheromones, caused his will power to finally fail him.

Karamatsu threw his arms around his weakened brother, tightening around him in a firm but careful hold, pressing his face in his neck. There was a long and deep groan from the alpha, who was finally losing control of himself in such this shameful he'd felt…

All the confusing feelings and uncertain thoughts faded away again, and he leaned Ichimatsu back against the floor, following him and pressing into him with his weight, his face still against his neck, inhaling his scent passionately. His entire body shivered from pleasure at his smell.

Ichimatsu finally moaned from the contact of their bodies pressed together. All his senses were blurring incomprehensibly together, the heat letting his omega nature override his self-control.

They both wanted only one thing right now.

Ichimatsu eagerly rocked his hips against his brother's crotch, forcing a low whine from him. It only took a moment for Karamatsu to do so in return, rubbing his body onto Ichimatsu, breathing into his nape, arms tightening even further around him.

Ichimatsu's left hand reached for Karamatsu's hoodie on his back, gripping it with all his strength, moaning desperately into his brother's ear from the urge to be touched more. Karamatsu was quick to slide his hands under the purple hoodie, caressing the shivering body intently, ravenous from the pleasure it gave him.

All this made his little brother arch his back up against him, trying to get Karamatsu to touch him even more.


It still wasn't enough for Ichimatsu.

He wanted to start begging for more—but he held his words back, letting himself enjoy the passionate touches he received, the embrace he was wrapped in. It was... kinda comforting. He was not used to feeling something like this—and fuck, he would’ve avowed to how much he loved it.

Before he could start to beg even just a little bit, Karamatsu quickly slid his hands from his chest to his behind, grabbing his cheeks firmly in his wet pants, the skin slick with his body’s self-lubricant. He rubbed his own hard, clothed erection against Ichimatsu's.

Karamatsu started to lick his neck softly—driving Ichimatsu absolutely wild.




“S-Stop already and put it in!” Ichimatsu finally burst out, voice loud and unsteady. He followed his words with several needy moans, grabbing him tightly.




Karamatsu wasn’t wasting any more time—quick and eager, he pushed his little brother's spine against the floor with force, though still kindly.

Ichimatsu left out some more moaning—from that action, but also from the despair of his heat, from the thirst for contact. It was too much…

Karamatsu leaned back, raising Ichimatsu's legs and pants up to his knees, unzipping his own fly in only mere moments before finally— whoa.

Ichimatsu's body stiffened at the sudden full feeling inside him, arching his back again, an electrical current running throughout his entire body. His mouth gaped wide open, letting out a greedy, beautiful moan.

Karamatsu quickly leaned onto him again, pressing his face back into his nape, arms tightening around him. Ichimatsu wrapped his legs firmly around Karamatsu's hips due to the hard embrace.

Karamatsu couldn't let himself look at his brother, scared of losing his control even more, having absolutely no desire to hurt him...because, yes, just from that noise Ichimatsu had made, it was already difficult not to rush the moment with wild movements.

I'm the worst... this is all his mind whispered at him before he at start moving, encouraged by the strength from Ichimatsu's shivering hand gripping him.

The little brother finally let out some high, breathy moans into Karamatsu's ear, due to the slow and lovely motions against him. None of them had ever heard that kind of voice from Ichimatsu before, that crying and groaning—Karamatsu thanked god for being the only one to ever hear it, because yeah... it was so beautiful and arousing that he could’ve died.

Karamatsu started to let out deep, hot sighs against his neck, giving the little brother even more pleasure, who couldn't stop whining and grabbing hard at his older brother’s blue hoodie. Ichimatsu began to move his hips against him, to get more friction against him.

Ichimatsu was so tight and slick on the inside—it was driving Karamatsu increasingly crazy, causing him to finally move faster into him, moaning lowly, lapping his tongue eagerly against his nape. Faster and deeper, this is how it should have been since the start, even if Karamatsu had been holding himself back for his brother’s good—but now it was too late for that kind of thought. Ichimatsu was nearly about to tip over the edge.

“N-Nii-sa- an. ..GNHHAH!”

There it was—Karamatsu completely lost himself at that needy call, and fuck, he was punching his cock against that sweet spot over and over and over, pushing Ichimatsu even closer to losing his sanity.

Karamatsu wasn't himself anymore—he thrusted into his younger brother at an even higher speed, moaning and growling harshly, making Ichimatsu voiceless, breathless.

Karamatsu reached his limit—he opened his mouth and latched his teeth into Ichimatsu’s neck, biting hard as he was coming deeply inside of him with a loud groan.

Overwhelmed from all those things at once, Ichimatsu came as well, arching his back more than he’d ever before, this pain, this pleasure— moaning louder than he ever had—so loud that even the others in the house probably could’ve heard him…