Lucario was playing some shooter video game on his desk in his joint room with his “little” brother Riolu. They were close to the same age, but Lucario evolved first so he flaunted that fact. The parents were gone for the weekend, they had to attend a wedding in Kanto, so that left them the whole house to themselves. They both jumped on the chance to play games, because they didn’t get much allowed time when the parents were home. Lucario was very competitive, and Riolu knew this, making him angry at every chance, chirping his every move. “AH FUCK!” Lucario said from the other computer, as he got shot down. “You fucker! You just made me die again!” He said, berating his laughing younger brother.
        
Riolu just laughed and kept playing, he knew how to push the buttons of his brother to get whatever he wanted, and today he wanted him. He wanted to be fucked hard by his older brother. They’ve had sex before, but this time it was different, they had the whole place to themselves. They could do anything here, and Riolu new that this was way too good of an opportunity to pass up. It was only the first day of the weekend, so to put this idea in his head early would pay dividends later.
        
“GODDAMNIT BRO!” Lucario said as he got killed again in game. Riolu could only smile and play for the moment. Knowing his plan was working. After an hour or so Riolu felt like it was the right time to strike. “Hey bro, I’m a little hungry, we got anything in the house?” he said. “Don’t know, don’t care!” The Lucario said, obviously frustrated with what was happening to him. Riolu sauntered over to his brother and started to stroke his leg, “Are you sure you don’t have anything for me, like some meat?”


Lucario pushed him off, “I already said, not right now I gotta get back after you fucked me all up here.” This pissed off Riolu, but he knew not to push any further, his brother needed to calm down to be ready. The last time they had angry sex...... well let’s just say Riolu couldn’t sit down right for a week.


They went to sleep that night, Riolu getting blue balled, but ready for the next day. Riolu made sure to wake up extra early that morning and get a few things ready, he cleaned up and everything, making sure to not wake his brother up.


As the day turned to night and night turned to day, Riolu got ready. Waking up, he made sure he was silent to get the upper hand. Quickly jumping into the shower so he could get fresh for the long day ahead. Feeling the water run down his body made him feel so good, he started to rub at his deep blue sheath, sticking his finger in and moving it around, pleasuring himself. Starting to appear from his sheath was a nice red cock, just peaking out, being bumped up and down from the water bouncing off of it. His hand started to approach his nice plump ass. Sticking a finger in there to loosen it up a bit, moaning out of pleasure.


Lucario started to hear noises from the shower, using his aura he noticed what his brother was doing, Might as well join him, I need to “freshen up” as well. He thought to himself. Lucario went close to the door and peeked in, seeing his little brother in the shower got him really riled up, enticing his arousal. Lucario began to stroke himself looking at Riolu fingering his tight little ass. Some pre started to leak out of the larger jackal’s cock, lubing himself up very nicely. Noticing Riolu was ready Lucario opened the bathroom door very quietly and snuck in. Quietly making his way into the shower he looked at his brother, facing away from him, completely in his own world. Lucario put his hand on his brother’s shoulders, enticing a surprised yelp from him.


“Oh hey bro, I didn’t know you were up.” Riolu said slyly.


“Well I am now, and I know what we both want.” Lucario said pushing his brother up against the shower walls, the water hitting the back of them. Riolu didn’t waste anymore time with talking and made the first move and kissed Lucario. Reciprocating, Lucario started to attack the mouth of his brother too, locking tongues and biting lips, only serving to amplify the pure lust in the room between the two. After releasing from each others grasp, Lucario said, “I can’t have all the fun, right?” and started to slide down his brother's body, caressing his wet fur, stroking down his body. He got on both knees to get close up to Riolu’s cock, now throbbing at this point, begging for anything to help it release. Lucario teased for a bit, rubbing the pulsating, red rod of his brother all over his face. 


“Ah fuck, just do it already” Riolu begged. With a smile on his face, Lucario was happy to oblige, wrapping his hands around the back of his brother, he brought himself closer and slid the cock into his muzzle. Moaning, Riolu put his hands on the back of Lucario’s head and started to push in, slowly at first but working up a faster pace as the time went on. Lucario started to sneak a few fingers up the sides of his brother, approaching his entrance. Quickly he shoved one in, to test the waters, having Riolu moan louder than before. After he felt comfortable he shoved another in on the the opposite hand, then pulling them apart, stretching the hole of the younger jackal. He put a few more inside to stretch him to a more appropriate size.


Riolu’s base started to swell inside of Lucario’s mouth, signaling the end was close. Lucario, noticing this quickly pulled off and stood up, leaving the throbbing cock there, spurting pre. “Why the hell did y-” Riolu started to say before being turned around by his brother, showing his plump, round ass all ready for him. Lining up his brother, a small line of pre bridged the way from the small hole to his thick, red cock, Riolu was leaning, chest flat on the wall, waiting to be fucked. Lucario grabbed the hips of his brother and thrust in hard, stretching his insides with his thick meat. Starting to thrust into his brother, picking up the pace and slowing down to maximize the time they had. Riolu couldn’t see or talk, with the water running down his face, he resigned to being his brother’s fucktoy, a fate he was happy to assume. Lucario was deep inside now, hip hitting against hip as he hilted with every long, drawn out thrust, feeling the tight confines of the smaller male pressing hard against his thick shaft. 


Riolu was used to the huge penis of his brother splitting him in two like this, he loved the feeling of the canine cock penetrating him inside. Feeling the cock slide up and down inside him, leaving a noticeable bulge in his abdomen made him go crazy with lust, finding himself pushing up and down the shaft on his own when Lucario needed to catch his breath. 


Lucario grabbed the legs of his brother and pulled him up in the air to get more leverage, chest still on the wall, with every thrust and pull back he was hit against it. The base of Lucario’s cock started to swell on the inside of his brother, locking them in place.


Even though experienced, it wasn’t every day he took the baseball-sized knot of his brother. He would never admit it, but the pain that got mixed with the pleasure of having someone tied inside of you was too much for Riolu, and he shot ropes of cum on the shower floor, quickly being swept up by the flow of water. Lucario was on the edge too, slowly thrusting after attaching himself to his younger brother. Soon it was his turn to cum too, and he shot hot, thick seed into Riolu, filling him up quite nicely.


They both took a minute to get situated in their new predicament, but a minute was all it took for Lucario to get ready again, taking him and his brother out of the shower, his knot got small enough so he could flip his brother over, so he could be face to face with him. Carrying him, he placed him on his elevated bed post, grabbed his legs so he wouldn’t slide and got right back to work, filling his brother with his thick, red, jackal cock. Harder than before Lucario was splitting his brother in two from the inside, now he could see just how deep he was going inside of Riolu.


Thrust after thrust, he unloaded into his brother, still sensitive from cumming just a few minutes earlier. The cum provided a nice lube that allowed him to go hard and fast smashing his hips against his brother’s. Pulling his legs closer and thrusting separating the ass of Riolu made Lucario go wild, provoking him to go harder and harder ramming his dick inside of the smaller jackal’s hole. His balls slapped every time he hilted inside Riolu, leaving a nice red mark on the lower ass of Riolu.


Riolu was in complete bliss, being fucked silly by his brother he became a complete mess, blinded by the pure lust emanated from the both of them, he was in a whole other world. He was lying motionless on the bed, eyes glazed over, and drooling from being fucked into another world. He moaned loudly with pleasure as he all he was at this point was a hole for his brother to fuck. It wasn’t long before he came again, shooting all over himself and the bedsheets. 


Seeing him like this just made Lucario feel so good, having complete control over his little brother sent him over the edge again, knot swelling even larger than before, unloading his seed for a second time. 


They took a minute to catch their breaths, Riolu finally snapping out of the sex-fueled haze he was in. Lucario, still knotted inside his brother, said with a smirk on his face, “I'm still good, want to turn this into a long day?”


A smirk appeared on Riolu’s face as well, “I’m sure I can take it, maybe you should give me a few chances at you as well.”