The monster inside of him

      A gentle knocking to the door made Riko startle so much that he nearly dropped the book he was reading. Or was attempting to, because he was pretty sure he didn’t read a single line for the last hour. It was some historical book he took from Kevin, but Riko’s mind felt too occupied and too empty at the same time to do anything. So he’d been just sitting there, pretending to read.       Everyone was out celebrating Christmas, so it was a small chance that a guest was waiting behind the front door. Kevin went to visit Thea, Jean wanted to see Renee and Nathaniel said that he had “an important business to take care of.” - whatever that meant. And Riko didn’t have anywhere to go, and refused to be a third wheel.       The apartment he shared with his brothers since graduating felt unusually empty and quiet. Riko didn’t know what to do with this and how to be alone in his own home.       The knock resonated again and this time it sounded quicker, as if the person was getting impatient.       Riko quickly made it to the door and opened it slightly, his heart skipping a beat when he saw who was standing there.       Nathaniel raised his eyebrows. “So you really are sulking here alone. Damn, I owe Jean ten bucks.”       Riko was already so done with this conversation. “Get lost, you brat.” A foot in the doorstep stopped the doors from closing.       “You don’t even want your present?” asked Nathaniel with fake exasperation. It was then that Riko noticed the box with a red ribbon in his brother’s hands.       Riko took a deep breath and counted to ten. “Aren’t you supposed to be with your daddy now?” he asked instead.       Nathaniel grinned. “Which one?” And yes, Riko was officially done with the brat.       “Why are you even knocking? It’s your home, too - you have your keys.”       Nathaniel shrugged. “I didn’t feel like searching for them.”       Riko pinched the bridge of his nose and opened the door further, letting the cold air in.       “Thank you, oh my captain.” Nathaniel bowed mockingly and stepped through the doorstep. Strangling him doesn’t seem like a bad option, Riko thought. He knew, though, that Kevin and Jean would hold it against him, so the thought only remained a pleasurable fantasy.       “For you.” Nathaniel handed the gift over. Suspicion rose in Riko, because knowing his brother, the box contained something that will make him regret his life choices. Nevertheless, it felt really nice to get a present.       While Nathaniel was taking his coat and shoes off, Riko went to the living room, putting more lights on on his way. He gently undid the elegantly tied ribbon and opened the box. When he saw what’s inside, he was speechless.       “You like it?” asked Nathaniel from behind Riko, startling the man.       “Fuck!” Riko put his hand over his heart and sent his brother a death glare. One day I’ll tie a fucking bell on him, I swear, he thought.       Nathaniel only grinned at his reaction. “Well?”       “What is this?” asked Riko through gritted teeth.       “A strap on, duh.”       Riko gingerly took it out of the box. The toy was red and black, but that wasn’t what grabbed his attention. It was the shape - a big tentacle, at least eight inches long. His hole clenched at the sight of it.       Nathaniel must have felt encouraged by Riko’s silence. “Wanna test it?” he asked giddily.       Riko was so ready to put his idiot brother in his place for all the embarrassment his stupid present had just caused. He quickly grabbed Nathaniel’s arm and twisted it behind his back. His brother wheezed, surprised by the turn of events. Nathaniel tried to squirm away but a squeeze to his arm and a hand around his throat discouraged him from doing so. Riko marched him to the bedroom, where Nathaniel’s hands and legs were cuffed to the bed quickly. Laying on his back, Nathaniel glared at Riko.       “That was so unnecessary.” he sounded offended.       “Shut up.” Riko crossed his arms. What to do, he pondered. There were so many options. He started off with going back for the strap on and Nathaniel smirked at the sight of it.       “So you’ll fuck me after all?” Riko wanted to wipe off the smug look on his brother’s face. “Oh, I think you got it wrong.” Satisfaction filled his chest when uncertainty crossed Nathaniel’s features. He chuckled. “I’m going to have fun and I don’t care about your needs.” Nathaniel’s clothes were cut off, at which Nathaniel protested. Riko ignored the complaints and put a harness on his brother’s hips. Understanding dawned on Nathaniel. Riko finished off with attaching the dildo next and took a moment to look at his work.       Nathaniel pouted. “That’s not fair.” He squirmed and the handcuffs rattled against the headboard.       “Life’s not fair,” Riko shot back. “Besides, it’s you who needs a prosthesis to fuck someone, not me.” His bottom growth wasn’t any bigger than Nathaniel’s really, but he knew humiliation turned his brother on. He applied lube to his fingers and took his time preparing himself for the toy, not holding back the moans. Nathaniel was watching like a hawk all the while, trying to press his thighs together and rub them.       “Come on,” the man on the bed whined. The handcuffs rattled again and Riko was sure there were red marks on his brother’s wrists from all the pulling. Not that he cared.       Riko slapped Nathaniel’s face, which got him a surprised look. “I think you are forgetting your place.” He put two fingers in Nathaniel’s mouth and pressed them deep, causing the man to gag. His fingers eased off a little and pressed down on his brother's tongue. “You live to serve me. Without me, you are nothing.” And they both knew Riko wasn’t exaggerating. Without his help and protection, Nathaniel would live a miserable life (if he would even be alive at this point), instead of being one of the best exy players and having quite a comfortable life.       A bit of drool escaped Nathaniel’s mouth and he showed the first sign of embarrassment today. Riko cooed mockingly and wiped it off with his spit-covered fingers, only to shove them back into Nathaniel’s mouth. His brother choked and glared at him.       “If you bite, you’ll regret it.” It was a promise Riko would keep.       Apparently, Nathaniel had some self-preservation left, because Riko didn’t feel any teeth.       “Oh, so you can be good.” Nathaniel tried to bite then, but Riko took away his fingers in time. He pinched his brother’s nipple, getting a shout in response.       “Honestly, you are like a rabid dog sometimes,” Riko continued, circling the nipple.       Nathaniel gritted his teeth. “Fuck you.” All the confidence was gone, which felt so delightful to Riko.       He chuckled. “In a moment.” His hand squeezed Nathniel’s jaw, which fell open, giving Riko the opportunity to stuff his boxers in there. His brother made a face, but wasn’t given the opportunity to free his mouth before tape was put over it.       “Much better.” Riko patted Nathaniel’s cheek.       Next, lube was put on the monstrous dildo generously, and Riko climbed on the bed. He made eye contact with his brother as he sank down slowly on the toy. When the first few inches breached his pussy, he threw his head back and moaned. The dildo was stretching him deliciously, not like any toy had ever done. Riko put one of his hands on Nathaniel’s chest for stability and took more of the toy. His brother’s heart was racing under his palm, the man underneath turned on just from watching.       When Riko bottomed out, he saw stars. His hole was so stretched and filled, and the feeling was unlike anything he’d felt before. He closed his eyes in bliss, forgetting about the world around him for a few moments.       A whimper brought Riko back to the present and he looked down on Nathaniel. His brother’s skin was flushed, his breathing coming in short gasps and his hands clenched into fists. Riko felt smug that he could do this to Nathaniel without even touching him. His hips made a circular motion and the toy must have grazed his brother’s clit, because he gasped.       “If you make me feel good, I’ll forget about your wrongdoings,” said Riko, slowly rising up and down on the dildo. “I’ll even consider letting you cum.” He grinned. Having someone at his mercy felt great for Riko and he couldn’t wait for the end of the break when all of his brothers would be under the same roof again. They needed some bonding time after the short separation after all.