Characters belong to Square Enix and Disney.
Based off the manga not the game. Spoilers for anyone who hasn't reached the ending parts for Kingdom Hearts one.
Also, this one is rated M.
"Impossible!" Maleficent looked at the large keyhole angry as showering sparks of light fell around her. "The princesses of hearts are all here! Why won't the keyhole open?" The sound of someone walking up the stairs made her turn around to see Riku carrying Kairi with one hand around her waist so she was pressed against him. His other hand held a dark keyblade with no keychain. "You! That keyblade!" It was the keyblade of people's hearts but it didn't look complete.
"So I see the path has emerged at last." he said putting Kairi down on the floor gently.
Her eyes took in his new appearance as he now wore darker clothes instead of his tropical ones and there was a large Heartless symbol on his chest. Something was off with Riku and she didn't like it even if it was for the better. He sort of reminded her of Xehanort.
Riku studied the keyhole and looked down at Kairi. "Without her heart, she will never be able to release her powers." He was aware Maleficent was watching him intently and smirked at her. "The keyhole to darkness huh? Unlock it and the Heartless will overrun this world."
"What do I care? The darkness holds no power over me! Rather, I will use its power to rule all worlds!" Maleficent walked towards the keyhole and pet the crow on her left shoulder as she thought. With this, nothing could stop her! Not even Sora and his blasted companions!
Riku's smirk widened and he tightened his grip on the keyblade. "Such confidence." Before she could turn around completely he stabbed the keyblade through her chest and she gave out a startled gasp then a groan. The crow flew away squawking loudly and Maleficent looked at him with terror.
"Wha-what…are y-you do-" Riku pushed it in deeper and twisted it so her heart beat violently and she almost fell to her knees from the pain.
"This keyblade has the power to unlock people's hearts. Open your heart, surrender it to the darkness! Become darkness itself!" The old sorceress tried desperately to pull it out but failed and screamed one last time before bursting into many dark pieces. Riku laughed and caught some of the pieces as they fell like ash around him. "She failed to notice the darkness in her heart eating away at her. A fitting end for a fool."
"You're…not Riku."
Riku turned to see Sora standing there between Donald and Goofy and he had a look on his face between a cross of anger and horror.
Oh, the funs about to begin!
"Tell me, who are you?" Sora demanded and Riku held his hands out to the side.
"It is I, Ansem, the seeker of darkness!"
When Riku spoke it was two voices speaking at the same time and Sora guessed one of them belonged to this Ansem fellow. "Whoever the hell you are, let Riku go! Give him back his heart!"
"I don't think so." Ansem snapped his fingers and a sudden pain shot through Sora's heart bringing him down on his hands and knees.
"Sora!" His two friends said worried as Sora started to pant but he shook his head at them so they would know he could deal with it.
"First, you give the princess back her heart."
"What are you-" Sora started then trailed off when he looked up and saw Kairi laying on the floor when Ansem moved out of the way. "Kairi?" The pain was forgotten as he got up on his knees ready to bolt on over to her. "What did you do to her!"
"Don't you see yet? Kairi's heart rests within you!"
The pain returned in a horrible throb and this time Sora bit his bottom lip as the pain got stronger but a groan still made it out. Donald and Goofy took out their weapons and moved in front of Sora to protect him as Ansem moved closer.
"The keyhole cannot be completed so long as the last princess of heart still sleeps." He quickly shot two dark auras at Donald and Goofy and send them flying back down stairs with the other sleeping princesses.
"Donald! Goofy!" Sora's face was forced forward again by Ansem's keyblade as it pressed against his cheek then moved down to press the tip against his neck.
"I'm still talking Sora pay attention."
"Sora!" Donald squawked as he ran back up and smacked into an invisible barrier Ansem had put up around himself and Sora.
Sora glared when the blade was replaced with the Ansem's hand as it snaked up his neck in a seductive way then cupped his chin. He looked in Ansem's eyes and held back a shiver as best as he could when he smirked at him.
"Forget it! There's no way you're taking Kairi's heart!" Ansem chuckled then leaned down close to him and Sora held his breath in horror thinking he would kiss him but no, Ansem passed his lips and went to his ear instead.
"Nevertheless," he whispered in pure malice and Sora knew that but it still gave a form of excitement. "I shall release you now princesses." Sora's eyes widen and just in time reacted to block Ansem's keyblade with his own in a loud clang.
Ansem pushed down trying to break Sora's defense and Sora pushed up trying to throw Ansem off and get on his feet. Ansem wasn't too happy when Sora was able to get up and he had to jump back once Sora was all the way up and strong enough to take a swing at him.
"Heh." Ansem shot out dark auras and Sora quickly stopped them an inch from his nose after he cast stop on them then felt a breeze behind him.
"Hi." Sora turned his face to the side trying to look back at his opponent instead of moving away like he should have and screamed as the dark keyblade cut across his side. Ansem moved out of the way as soon as Sora recovered from the hit and keep a hand to his cut; his clothes soaking up the blood. "Kairi Kairi Kairi! You only care about her!"
Sora walked backwards as he blocked all of Ansem's quick swipes and one cut the side of his cheek when he didn't block fast enough.
"Didn't you think it was strange that Kairi should lose her heart when I was there with her?" Sora rolled away and looked at Ansem tired of blocking since he didn't want to truly attack knowing that it was Riku's body.
"What are you saying?"
"That I opened the door to darkness and let Kairi's heart be taken! I let the worlds disappear so that we could be on our own world without her!"
Sora felt himself blush getting the sense Ansem… um, er Riku, was jealous of Kairi because of him.
"You're a Heartless! You don't have any feelings!" Ansem knocked Sora to the floor and brought his keyblade down on him so Sora moved his up and nearly had his windpipe crushed from the force Ansem used to keep him down.
"I may be a Heartless, but Riku's feelings when I took over him are real. The only reason he seemed to get Kairi to like him was so she wouldn't fall for you." Sora looked at him confused.
"Why?" Ansem kissed him and his eyes widen to the sudden action and continued to stare at Ansem like that even after he leaned back.
"You're too naïve. Did that kiss explain enough?"
Sora closed his eyes breathing hard and hoped that he had just fainted and was hallucinating. Now this moment would be forever stuck in his mind of his best friend kissing him instead of his enemy. But his mind just wanted to be cruel to him and little memories started to drift through his mind and suddenly a red flag went up. Riku only smiled when he was around him and he was always so protective of him. Always watching him with that strange expression that he had never understood until now. Sora opened his eyes again when Ansem creased his cheek and he couldn't see him as Ansem anymore.
"Let Riku go." he said in a flat voice and felt his heart waver at the familiar smirk Riku did when he won over something.
"Not a chance."
Sora gasped and quickly followed it with a moan as Riku's hand unzipped his pants and entered inside feeling its way over his groin.
"Stop…it.." he whispered as it started to dawn on him that this was really happening. That he might, that he would be…..
"I like how your voice shakes when you're afraid. Sounds so erotic." Riku whispered against his ear and Sora started to panic and squirm underneath him. Something cold crept over his wrists and Sora lost his hold on his keyblade when his arms were forced down against the floor besides him. His weapon disappeared and so did Riku's when he had him bound.
"No Riku don't do this!" he pleaded noting how much darker Riku's aquamarine eyes had gotten as he continued his advances.
Goofy was desperately trying to get in and Donald was in shock.
"What the hell is he trying to do?" Donald asked and Goofy looked at him panicked.
"Can't yall tell? He's trying to rape Sora!" Donald felt his feathers go stiff and raised his staff in the air angrily.
"Thunder!" There was a flicker of yellow light and then a loud crackle before the lightning bolt hit the shield. It only received a small scratch and Riku looked up at Donald annoyed that he was being interrupted and Sora strained to look at Donald upside down.
"Get away from here!" he shouted at his feathered friend but Riku pointed a hand at them and they froze at their spots unable to move.
Goofy broke out in a sweat as he tried to break free of the invisible force. "We can't move!" he said looking at Donald from the corner of his eye seeing him struggle as well.
"Donald! Goofy! Ahhh!"
Riku nibbled down Sora's neck leaving bright red bite marks and he screamed out when Riku bit on his skin hard enough to draw blood. He watched as Riku licked the blood that trailed down his neck to the floor and turned his face away as Riku tried to kiss him.
"It's your own blood how can you be disgusted?" Riku said so close Sora could smell the iron and let out a rush of air from his nostrils wanting the smell out of his lungs. He whimpered as Riku licked against his lips refusing to open them for him and Riku frowned. He punched Sora where he had cut him on his side earlier and Sora opened his mouth to give a cry but Riku shoved his tongue inside. Sora gaged at the taste and Riku pulled away suddenly and slapped him making Sora see white from the force of the slap for a few seconds.
"You're going to enjoy this." he said glaring at him then spit blood to the side caused from when Sora had bitten him during the kiss. Sora watched helplessly as Riku pulled the only thing separating him from being completely exposed harshly away and closed his eyes against the humility of being treated like this in front of his friends. He heard the shuffle of clothes and twitched when Riku grabbed his thighs and spread him wide for what was to come. Kicking at him wouldn't help Riku had a vice like grip on his thighs that it made his legs feel numb.
Sora bit his bottom lip and resisted letting out a whimper as he felt a ripping pain when Riku thrust inside without any warning or preparation. He felt his insides tear and stretch to their limits to accommodate Riku's size and his heartbeat increased rapidly. Riku on the other hand moaned at the feeling of having his shaft buried deep inside him and rolled his head back with the twisted pleasure he was getting.
Although Sora could keep quiet he couldn't help how his eyes welled up with tears and made a wet mess over his cheeks. This pain was much worse than any battle wound he'd ever gotten and he attempted a weak glare at Riku for taking his innocence away.
Goofy and Donald's hearts shattered seeing Sora like this and they looked away or closed their eyes and tried to block the noises that Riku emitted as he got pleasure from Sora's body. As Sora's friends they had failed to keep him safe and now this would hunt their hearts.
Riku pulled out and back in faster each time and Sora finally screamed out from pain, shame, and anger. Riku pressed a hand over his mouth to muffle the screams but Sora shook his head wanting it off. Blood pooled between Sora's legs from the abuse and he could taste blood in his mouth from all the screaming he was doing. But it didn't stop. Riku kept at it until he unloaded himself inside him then pulled out with a satisfied grin.
"Thanks for the fuck Sora."