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His thoughts were so unsavory, so perverse. Rin’s leg hasn’t stopped bouncing since he started researching the human heart for his Anatomy and Physiology class. Each part made him feel something. More and more each time. His groin felt tight, like his pants were trying to squeeze him to death.
The Vena Cava, dragging the used blood into the right atrium, pushing it past the tricuspid valve into the right ventricle to wait its turn to get into the lungs through the pulmonary artery.
He gripped his pencil a little harder. The walls of the heart were fatty, soft, squishy, and durable. Chewy.
Rin had to put his pencil down, face tinted a peachy pink. Why did this make him feel like this-?
He chewed his lip. He could almost taste the iron in the blood that threatened to sprout around his canines. The thought was tantalizing… ripping someone apart… eating up parts of them. Using the organs in ways never intended by any god above.
There was a certain hot tenderness to the idea. Lips on flesh. Teeth on organs. Of course, in reality this would be hard to do with bare hands and would be excruciating for the person if they even survive that. But in Rin’s little fantasy, the person wasn’t in agony. Only a tender, subtle pain that left them feeling numb but still present.
A dangerous thought crossed his mind. If the heart is beating faster due to pleasure or need… it would feel good to be against… or in…
Rin stood up, walking to the door to grab the hallpass and quickly walking out of the class, even if the teacher called after him. He was a man on a mission now.
He walked into the bathroom, shoes tapping against the floor and face flat like he wasn’t losing his mind over anatomy of all things.
Rin huffed against the stall’s wall, the door locked. Looking down, he had to be thankful for his overly tight, and slightly uncomfortable, boxers. The thoughts of blood and organs were ripping him up inside.
The lungs and their soft leathery outside and their fuzzy inside from all the capillaries and alveolis, pressing his tip through them.
“U-Ungh…” Rin closed his eyes as he panted, unzipping his pants and rubbing lightly at his front.
Then pressing deeper into the fuzzy branches of tissue. “Hah… ah…” another feathery touch to his twitching member. Pulling out of the lung to relieve the person’s heart a little before pressing against the beating muscle. “Ngh…” Pre mixed with blood and tissue and fatty lipids.
Rin tugged his boxers down, watching his member leak. “Fuck… hah… stupid brain… stupid…” He grumbled as he wrapped his fingers around the tip. “N-Nn…” his imagination kept running wild.
The soft wall of the heart’s right ventricle slid around his member, holding it tight. The blood flowing past his tip as he pressed a little more in, the fat and muscle tightening as it pumped the blood against his member.
“M-Mngh-!” He wrapped his hand around his tip as he pressed down a little, stroking under the tip and making a lewd whine leave his throat. “Nngh…~”
Rin didn’t need a face… but he kept imagining a man. A male with pale skin like himself. The blood running from his nose down cherry blossom lips and dribbling down into his open ribcage. The skin was soft, velvety with sticky red blood against the pale skin like stained hotel room sheets.
He huffed as he squeezed a little bit, trying to make it a rhythm, much like a heart beating. “Hah… ah…” Rin placed his head against the stall wall, drooling as he moved his hand a little more down, pressing his hips forward into it. “Nnn… Hah…”
Blue eyes. Dark hair. Round, soft face. Panting and whining in light pain and pleasure. Groans of discomfort but moans of soft pleasure drawn from his lips like a flower rooted in his throat, tugging it out of his trachea.
“Hah…” he didn’t want to moan the name. He didn’t want to admit defeat to this feeling. Giving a name to the face made it feel personal. It didn’t have to be personal. But thinking of him… thinking of this. Fucking his rival’s organs.
It was driving him crazy.
Rin squeezed his member a little harder than last time, panting as he imagined the sweet sounds and feelings of the heart’s fat around his cock, the blood still trying to move through but blocked by his member.
“Isagi… hah… Isagi…” Rin panted lowly, feeling the coil in his stomach at the name. The intensity of thrusting into his hand and his vivid imagination was getting to him. Every one of his partners had called him a quick shot. But he had been doing his best to ride it out for a little longer… he wanted to enjoy this feeling. “Hah-“ this domination over the other man. Both body and mind. Inside and out.
Rin bit his lip, “take it… take it… hah… ah…” He drooled out the words almost desperately. His skin made a lewd sound as his balls hit his hand, rhythmic as he kept squeezing on time with a fast beating heart. “Fuck… I can feel it… feel- hah… how excited you are- how desperate- ahn…~” Rin talked low and gravelly to the mental image of the half passed out boy.
He squeezed around his tip to try and emulate the feeling of his cock pressing past the Pulmonary valve. “A-Ahn… ah…!” He couldn’t help it. He bit his lip and near whined a lewd sound as his orgasm crashed over him. “Mn-! N-Ngh-!” He tried to stifle himself, but his eyes were rolling back and rational thought was leaving him. Rin pressed his cock as far as he could go into his hand, panting with the hot feeling of his cum spurting against the wall of the stall, milked out as he squeezed and pressed up his cock. “Ahn…~” He panted and drooled, coming down from his high as his cock finally flatlined, his body hot and slick.
Rin took a moment, his racing heart slowly calming in his chest. “…” He finally looked down at the mess on the wall and his hand. “… ew.” Rin grumbled, face red with both shame and embarrassment. He was such a dirty pervert.
The soccer player grumbled, tucking himself back into his pants and pulling a few strips of toilet paper out of the dispenser to clean both his hand and the wall of the results of his shameful thoughts.
It was today he learnt that necrophilia isn’t just an attraction to dead bodies, but also the act of dying.
He also learnt that he might have trouble in Anatomy and Physiology.