-- On the road to King Kai's - Flashback --

Goku was on the road to King Kai's, running along Snake Way was exhausting. He'd been running for what felt like weeks. Eventually he seen a vehicle driving by and asked for a lift so he could travel and get some rest at the same time. Goku quickly fell asleep on top of the truck. A few hours go by and Goku is still asleep atop the truck until one of the tires clips the spikes on the side of Snake Way, plummeting him to hell Goku was still asleep on the way down, quickly waking up when he crashed into the ground below. Goku let out a loud scream as he hit the hard rocky ground. He got up and rubbed his head.
"Where am I?" He asked himself, remembering the truck ride but not knowing that he had fallen. He looked around to see a barren wasteland of rocks and dead trees. He sees something in the distance move behind the thick fog.
"Hello?" He yelled towards the unknown figure. He slowly made his way forward, cutting through the fog. He eventually made it to a clearing. He saw the figure once again, moving towards some more trees. Goku caught up to the figure. He had long black hair, wore black saiyan battle armor and a tail wrapped around his waist.
"Raditz?!" Goku yelled as he spun his brother around.
"Little brother? Why are you in hell?" He said with a cocky tone.
"Hell?!" Goku screamed. Coming quickly to the realization of falling off Snake Way, Goku looked back at his brother, remembering what Gohan had told him as he was dying.
"You!" Goku yelled in Raditz face.
"You... You... Raped my son!" Goku yelled even louder.
"Oh please, your brat was practically begging for his uncles cock." Raditz laughed.
"Us saiyans are hyper-sexual Kakarot, I was doing him a favor." Raditz explained. Goku filled up with more rage than he ever has. Unleashing his power, Goku flew towards Raditz with new speed and strength. Goku landed a punch onto Raditz, knocking him down onto the rough ground below. Goku aimed his hand towards his brother as ki started to form around it, lighting his hand up. He let out a massive blast, covering the area in dust, rubble and smoke. As the dust settled, Raditz could be seen in the crater, completely naked. Goku's blast was soo intense it completely obliterated Raditz's suit.
"What the?!" Raditz let out, not seeing Goku's immense rage increase his power. Goku walked towards his naked brother and kicked him in the face, knocking Raditz onto his stomach. Goku stood over his older brothers naked body. He stared at the round mass of ass cheeks. He leaned down and parted the cheeks, revealing his brothers hairy, pink, tight hole. Goku swiftly pulled his pants down, showing off his cock to his injured brother.
"Don't worry... You want this!" Goku screamed as he forced all his inches down his brothers ass, pressing his pubes up against Raditz tail. Raditz didn't expect his brother to be soo rough.
"Aaghhh!" Raditz screamed in pain, no one has ever soo much as seen his, let a lone been inside it. Goku kept thrusting with no breaks.
"What's the matter? We are saiyans after all. I thought you would have wanted it!" Goku yells, picking up the pace in his thrusts. His balls constantly slapping off his big brother. Raditz was moaning throughout it all, partly in pain and partly in pleasure. Raditz wasn't lying when he said that saiyans are hyper-sexual, their libido is soo high they could probably have sex for hours and still find it as enjoying as the first time. They are a primal race after all. Goku was slamming his hips roughly into Raditz's firm ass cheeks, Raditz was moaning the entire time, wanting more and more of his brothers dick in his ass. His own cock had grown to its full size too.
"Come on Kakarot, you can fuck harder than that!" Raditz mocked as was getting raw fucked up against a boulder.
"Oh yeah! You want harder?!" Goku yelled, filling with more rage.
"Well here it is!" Goku picked up the pace, holding onto Raditz hips as he pressed them down, leaving marks where his fingers were with the force of his pull. Goku wanted more, more than just his brother ass but he didn't know what. Raditz started wanking his own hairy cock off as his younger brother forced his way inside of him. Goku grabbed Raditz by his hair with his right hand as he used the other to slap his big brothers ass cheek, causing it to go red.
"Fuck! Take my load!" He yelled, continuously thrusting in with immense force. Goku unleashed his white, salty cum, filling his brothers ass. Even though Goku was cumming he kept thrusting, using his own spunk as lube. Some of his jizz trickled out and slid down his hairy balls before falling to the ground. Goku grabbed onto Raditz waist and flipped him onto his back whilst his hard dick still rested inside him. Goku got a full view of Raditz large, hairy dick. It pointed straight up and slapped onto Raditz's abs before bouncing back up to face Goku as he thrusted harshly. Raditz was really enjoying having Goku's cock up his tight ass hole a lot more than what he was expecting. Raditz lifted his arms to start feeling Goku's chest, ripping his shirt of in the process, leaving Goku completely nude. His hands wandered Goku's large bouncing pecs, he made his way to the small nipples and started playing with them, pinching, twisting and rubbing them.
"Fuck that feels good!" Goku said, not dropping pace of his hips. With each thrust into his brother, Goku's own ass cheeks parted, revealing his less hairy but equally as tight ass hole. Raditz continued tweaking Goku's nipples as he was violently fucked. He used his saiyan tail to snake behind Goku and stroke his ass. Raditz dropped his left hand off the younger saiyans nipple and started playing with his twitching, larger cock. Raditz plunged his tail into Goku's ass, causing Goku to moan even louder.
"Fuck... Raditz!" Goku grabbed onto Raditz's shoulders and slammed him down with more force. Raditz carried on playing with his brothers nipple and his own cock whilst using his tail to fuck Goku. Raditz didn't last much longer before he shot his cum all over himself, covering his hair, face, chest and abs in the milky hot liquid. His climax caused his ass to contract around Goku's cock and his saiyan tail to stiffen inside Goku's ass. Goku's dick twitched violently as he unleashed his second load of cum up his brother slick ass. Raditz was exhausted after being dicked that hard that he passed out, covered in his sticky substance. Goku slid out with a pop as a pool of hot spunk flew out of Raditz, leaving a pool on the floor beneath. Goku got dressed and started wandering off to find a way out, leaving his naked brother on the floor in a mixture of spunk.