Chapter Text
It was a rainy day, the raindrops were falling fiercely to the ground.
Dark clouds had completely swallowed the sun. They wouldn't allow even the slightest ray of sunlight to reach the earth. It was a depressing sight, enough to ruin even the best mood.
That's why the blue-haired mortal clicked his tongue, slamming the curtains shut to avoid seeing the darkened, weeping sky. He shook his head in displeasure, refusing to let the soul-sucking weather spoil his mood. Returning to the counter, he calmly sharpened his favorite knife one last time. After deciding it was perfectly sharp, he hummed a melody he'd made up himself and headed towards the door leading to the basement of his house.
With an excitement he could barely contain, he opened the door, almost skipping down the stairs. Although the basement was dark, the sparkle in his eyes shone brightly. After descending the stairs, he turned on the lamp to illuminate the dark basement, the dim orange light allowed him to see better, and he couldn't help but let his lips curl upwards.
His excitedly shining blue irises fell upon the body on the wide bed. There he was, his favorite thing in the world. He squinted his turquoise eyes, shielding them from the sudden burst of light. He was wearing nothing but trousers, his upper body was completely exposed like a candy aisle. Seeing the blue-haired mortal approach he sat up, spreading his legs to sit comfortably on the edge of the bed.
“What took you so long?” He questioned, his voice making it clear that he didn't care about the answer. The smile on the mortal’s lips widened.
“Why, you missed me?” He asked, smiling, and a chuckle escaped his lips when he saw the dark green-haired man roll his eyes in response.
He put the sharpened knife into his back pocket, then opened the cupboard in the basement and looked inside for a while. After glancing at all the tools, he picked up the one he wanted to try today, and walked towards the immortal sitting on the bed.
The immortal raised an eyebrow when he saw the tool in the mortal’s hand.
“I don’t think this is gonna work either,” he said lazily, but received no reply. He hadn’t expected one anyway.
The blue-haired man held the tool in one hand and grasped the immortal's face with the other. With a swift movement, he pulled his face towards him, pressing his lips firmly against his. The immortal's lips parted instantly for the mortal, allowing his tongue to invade the inside of his mouth. A small gasp escaped his lips as he felt the mortal's teeth lightly pierce his lower lip; the mortal swallowed both the slight gasp and the blood that dripped from his wounded lip.
Then, without separating his lips, he turned on the chainsaw and plunged it into the dark green-haired man's stomach.
The immortal's eyes widened in sudden pain. The mortal swallowed the tearing scream that rose from his throat like wine, smiling against the immortal's bloody lips.
"What's wrong, Rin?" He asked, pulling his face back slightly after stopping the kiss. "You feeling like dying today?"
Rin couldn't even form a sentence because of the chainsaw actively tearing apart his internal organs. A handful of blood spilled from between his parted lips, his chest rising and falling rapidly with a pain that scratched at his lungs. His hands found the collar of the blue-haired mortal, pulling him closer with the little strength he had.
“Stupid Isagi,” he said mockingly, a trembling but arrogant smile on his lips. “You know this ain't enough to kill me.”
Isagi’s lips parted with a shaky breath, his pants tightening at the sound of his pained but unyielding voice.
He pressed his nails deeper into Rin’s face, drawing their faces closer. He extended his tongue and slowly licked the blood running down Rin’s jaw, allowing Rin to pull him onto the bed with him. Then he pulled the chainsaw from his stomach, kneeling between Rin’s parted legs. He thrust the still-operating tool into Rin’s chest this time, a silent scream escaping the immortal’s lips.
“You look the best when you’re covered in blood,” he said in a dreamy voice, his cheeks flushing with the adrenaline he felt. He slowly but surely rubbed his hips against Rin’s, and when he saw Rin rub back, he let out an amused laugh.
Rin really was the best.
The bed beneath them was stained red with Rin’s blood, but Isagi didn’t stop. He gripped the chainsaw tightly with both hands, then pulled it with all his might, splitting Rin’s upper body in two. Rin’s warm blood splattered on his face, hands, clothes, everywhere. He licked the drops of blood that splattered on his lips with great pleasure, then turned off the chainsaw and pulled back to look at his work.
The light in Rin’s eyes went out, his lips parted but no sound came out. His split chest rose and fell dangerously slowly, Isagi could see his pink and red organs. He leaned down slightly and looked closely at Rin’s wounded chest, holding his breath.
His eyes lit up as he watched the cells slowly begin to fuse and return to their former state, a joyful smile spreading across his lips.
“I failed again,” he said, but his voice was too cheerful to sound as if he was saddened by his failure.
Rin let out a sound like a laugh, blood flowing even more from his lips with the effort.
“Useless son of a bitch,” he said, his voice more affectionate than reproachful.
Isagi’s lips curved into a sweet smile at Rin’s words, he put the chainsaw aside and reached for the immortal’s blood-soaked pants. With unhurried movements, he stripped the immmortal of his only garment, discarding the fabric heavy with the blood it had absorbed. He unbuttoned his own pants and lowered his zipper, then took his hard cock into his hand alongside Rin’s. He began to jerk off their throbbing dicks with his blood-slicked hand, hearing the shaky breath from between Rin’s bloody lips.
“One day I will kill you,” he vowed, his gaze shifting between Rin’s face, contorted with a mixture of pain and pleasure, and his chest which had almost returned to its former state.
“But today is not the day.”
Rin’s lips curved into a tired smile and he reached out, running his hand roughly through his blue hair. Pulling Isagi’s face towards him, he pressed his lips against his, kissing the mortal slowly and sloppily.
Isagi’s hand quickened, his stomach clenching upon Rin’s slow kiss. He knew Rin was close too as his grip on his hair tightened, so he jerked them off even quicker.
After a while, they both reached their climax, cumming on Rin’s fully healed chest.
He pulled his lips away from Rin’s, straightened up again and reached into his back pocket. He took out the knife he’d been sharpening as he was sitting between Rin’s legs, tilting his head slightly to the side as he looked at the immortal whose eyes had regained their light.
He held the knife to Rin's throat, his other hand on his chest, a faint smile on his lips.
"Up for a round two?"