-- Alternate Timeline -- 

The androids have destroyed the entire city, decrepit building surrounded the streets that were littered with rubble and debris. The androids would take anything they wanted and killed anyone they wanted. Gohan was training Trunks as they needed to get stronger to defeat the threat that plagued the earth. Grey clouds loomed above as Trunks flew through the rain, weaving in between buildings to find his master. Flashes of light lit up his surroundings. Trunks was flying for about a minute before he seen him, lying face down in a puddle.
"Gohan!" He shouted as he quickly lowered himself, as he landed he ran towards the limp body. He quickly realized what had happened, Gohan wasn't unconscious but dead.
"Oh gosh no!" Trunks cried.
"What did they do to you Gohan?" Trunks croaked as tears ran down his face. He screamed Gohan's name one last time as he turned the body over. Whilst Trunks was holding onto his deceased friend and trainer a swift kick hit him, sending him flying into one of the turned over cars in the street.

"Well, well. Look who we have here." The dark haired android said in a cold, monotone voice. His icy blue eyes stared straight at the weaker saiyan as he stood over Gohan's body. Android 18 was no where to be seen, leaving Android 17 alone with Trunks. Android 17's hair was shoulder length and parted in the middle, raven black strands of it would periodically sway over his cold eyes.
"Your friend was fun to kill, I only hope you put up as much of a fight as he did." He said in the same monotone voice. Trunks' body filled with rage as he flung himself forward, holding his fist out ready to punch Android 17. The android was too fast for Trunks though, making him miss. The raven haired villain elbowed Trunks into the road below and kicked him as he bounced off the dark concrete.
"I have an idea... I'll keep you alive, as a play thing." Android 17 said, loud enough for Trunks to hear.
"W-what do you mean by that?" Trunks coughed as he spat out blood. Android 17 kept walking towards the saiyan slowly. As he reached him he kicked Trunks again in the face, knocking him into a daze. Trunks couldn't focus or move as he was now dizzy from the blow. Android 17 reached down and tore a hole in the back of Trunks' trousers, showing off his round ass the the android. The villain leaned down and spread Trunks' ass cheeks apart, showing off his tight, untouched pink hole that was surrounded by a light dusting of purple hair.
"This will do nicely." The android said as he took off his belt. He used the leather strip to wrap around Trunks' wrists, stopping him from escaping. He then put his foot on one of Trunks' and pressed down until he heard one of the bones break, immobilizing him.
"You won't be going anywhere." He said as he started unzipping his trousers. Trunks was screaming in pain and humiliation, not only had he seen his best and only friends dead body but now he was going to be raped by the person that had done this, not to mention he now had a broken leg. Android 17 fished his hard cock out from his jeans and started stroking it in font of Trunks. Trunks watched as the android stroked his dick, trying to think of a way out of this. The android then kneeled behind the defeated saiyan and lined his dick up to the teens entrance.
"Don't worry, this won't hurt... Me at least!" The android started laughing, knowing that this would hurt Trunks badly. He pressed the tip of his cock up against Trunks' hole and thrusted forward, burying his entire dick inside the virgin boy below.
"Fuck, you're tight! I've always have thought that you and your friend were fucking, but clearly you're a virgin!" Android 17 Thrusted deep inside Trunks, ramming his entire dick inside until his pubes pressed against Trunks. Trunks' sobs and screams filled the streets as rain pored on the two guys. Android 17 could feel how tight he was, his ass was eating his dick, hugging it as he entered and pulled out. Android 17 could feel a liquid escape Trunks' tight ring.
"Hm... Blood, you really were a virgin, huh?" He laughed, knowing that Trunks was hating every minute of this. Android 17 sped up his pace, violently entering and exiting Trunks as his balls slapped against the tied up boy below.
"Come on, scream for me!" The raven haired villain demanded. Trunks was screaming, but in pain not out of enjoyment.
"Get off me!" Trunks' scream echoed down the empty roads. Trunks kept complaining before Android 17 had enough.
"Shut up!" He demanded, hearing Trunks still complaining he took off his orange scarf and stuffed it into his mouth, now all he could hear was muffled screams and moans as fucked him raw. Trunks could feel blood escape from his violated hole as a big dick rammed its way inside of him, tears flooded his cheeks as he knew he wasn't getting away.
"Fuck, you're soo fucking tight!" Android 17 grunted, slapping his balls against the purple teen as he thrusted deep inside. He the teens firm, round ass as he continued to force himself inside of him. Android 17 continued to fuck Trunks violently, ramming his cock into Trunks' tight pink hole. He placed his hands on Trunks' hips and started pushing him down harder and further and he thrusted his hips inside the teenager.
"Fuck I'm gonna cum soon!" The android spoke, getting Trunks' hopes up, thinking that it was almost over. Android 17 grunted as he thrusted into the purple haired saiyan, slapping his hips up against him one last time before spilling his cum inside the abused ass. Trunks was still crying, staring at his friends dead body to take his mind off what was happening to him. The android slowly slid out from Trunks' cum soaked ass hole before he went around in front of him, he kneeled down, his dick still hard and pointing Trunks.
"Us androids don't run out of stamina. You know what that means, don't you?" He asked as he took his scarf out of the teens mouth and slammed his cum soaked dick, with a few spots of blood on it into the saiyans mouth. Trunks was gagging and choking on the cock until he accidentally bit down a little.
"Argh!" Android 17 yelped as he took his cock out of Trunks' mouth. He formed a fist and slammed it down, smacking Trunks' head into the concrete. Cracking the ground as they made contact, knocking Trunks out in the process. He lifted Trunks up by his hair, opening his mouth as he slid his dick back inside of him. He kept thrusting until he unleashed his second load of jizz into the saiyan. With Trunks being unconscious, as Android 17 took his dick out of his mouth a puddle of cum came out too and dripped down his chin until it pooled onto the floor.
"I'll leave you alive... For now." He says as he zips up his trousers and ties his scarf around his neck. As he starts walking away he notices a small metal rod on the floor. He picks it up and approaches Trunks again, he looked at his bare ass cheeks before placing the edge of the steel rood onto Trunks' torn ass. Trunks started waking up as the rod entered his body
"Aaaarghh!" He screamed in pain as the rod got deeper and deeper. Android 17 let out a small blast towards Trunks, not enough to hurt him too much but enough to burn his clothes away, leaving him naked and abused in the rain.
"If I see you again I will kill you." 17 says as he starts flying away, leaving the rod in Trunks' ass as a parting gift. 

Trunks managed to go back to Capsule Corp and get changed into some clothes, he rested there for the next two days before the time machine was ready to be used for him to go back for help and stop the androids from taking over.