TMNT/FNAF/Creepypasta/Undertale FanFic Oneshots! (REQUESTS CLOSED)

Demon!Leo X Raph

Requested by @Tmnt2456
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Leo and Raph stood in the dojo, had woken up early in the morning to train. Leo couldn't sleep at all and needed to let his built up energy and rage out. Raph was more than happy to help with that, loving to fight Leo especially when he was angry, getting a good fight out of his brother's strong emotions.

Leo's completely black eyes examines Raph as they got in their battle stance. The blue clad turtle snarled and charged at him and Raph dodged. Leo turned to face him and Raph jumped down at him and the demon blocked his attack with his katana, pushing him back.

Raph ran towards him, flipping over him and getting Leo's arm caught in the fork of his sai, flipping the blue clad turtle over his shoulder and onto the floor.

Leo groaned and sat up. Raph smirked and stood akimbo over Leo.

"Wanna go again?" He asked.

Leo growled and stood up, walking past him making sure to hit him hard with his arm. The demon paced along the walkway between the couch and the little pool the swing hung over.

He couldn't stand losing especially to his cocky brother. His emotions were getting unstable as he no longer tried to fight with himself to keep them under control. He knew he was starting to lose himself and he grinned slightly. He goes topside as Raph walks out of the dojo.

"Leo?" He looked around for his demon brother. "Leo!"

Leo crawled out of the sewers and levitated up to the top of the roof of a building. He sees a worker working on an electricity box. He grins and steps over to him, grabbing the man in a headlock and absorbing his life.

Raph ran out of the sewers and pulls out his phone and tracks down Leo. He finds his brother killing the worker and runs over to him.

"Leo!" He called out.

The blue clad turtle drops the lifeless man and flies off, Raph running as fast as he could to catch up to him.

Leo flew to a church and stood on the rooftops, waiting for someone to walk out since he couldn't be inside any religious building.

Leo jumped down onto someone and absorbed their life and did the same to other people exiting the building.

Raph ran over and threw Leo off them. Leo tried to fly back to the group but Raph punched him hard in the back. The demon turtle glared at the red clad turtle.

"Come on, buddy follow me! Take me!" Raph taunted and ran the other direction as Leo chased him.

Raph ran into an alley and Leo jumped down in front of him and cornered him.

"Come on, Leo. I know you can't take me." Raph glared. Leo snarled and grabbed his neck, pinning him against the wall. He leaned into his neck and stopped, smelling him and starting to smirk. He goes to bite and Raph grabs his jaw and moves his head up and presses his lips against his.

Leo's eyes widen and he kisses back, moving his hand from Raph's throat to his shoulder.

Raph pulls away and Leo looks at him. "I..I'm sorry..." the blue clad turtle looked down.

Raph smiles gently and kisses his head, hugging him close. "Don't worry about it, Leo, I get it."

Leo smiles as Raph holds him to his chest, keeping him calm and collected. And they would do this, Leo losing himself and stealing people's lives and Raph calming him down, for a few months.

"Raph..." Leo held his hands.

"Hm?"

"How long is this going to go on for...?" The demon's completely black eyes look up at Raph.

"I don't care. Just as long as it don't end." The red clad turtle pulls him into a warm kiss and traces patterns on his shell.

Leo smiles and pushes Raph onto his back and kisses his neck. "I love you~"

Raph blushes a little and smiles and chuckles a bit. "Heh... Love you too."