I don't own DBZ
A/n I'm trying out a new story I had an idea for. Mainly Trunks and Gohan but the OCs will have big roles. No GT, Mr. Buu, or Uub.
From a distant part of the universe a new threat appeared around five years after the defeat of Majin Buu. The group was known as the Interplanetary Defense Empire, they took over planets on the basis that they were protecting them from others invading them. King Kai heard about them from South Kai and told him that Goku could easily take them on. They'd all seen what the universe's greatest hero could do but the new group was so mysterious, none of them knew much about them. Either way, the North God called Goku to his planet and the man came within the second using Instant Transmission.
The Saiyan from Earth was told where he could find them and he teleported there. The entire universe felt it as multiple power levels could be felt, including Goku as a Super Saiyan 3. The terrifying problem was that the other powers were trumping Goku's and none but King Kai could see what happened in the distant galaxy.
For the first time ever, the God came down to the mortal world and grouped together all the powerful fighters of the Earth. His message was dire, Goku was killed, and before he started fighting he foolishly introduced himself as Son Goku from Earth. This time there was no wishing him back even if it was possible, the man made it clear that the next time he died it was to be for good. The enemy knew what planet they lived on, so Vegeta plainly stated they kill them before the aliens get to their home. The Prince, both of Goku's sons, Piccolo, and Krillin all agreed to go and avenge their fallen friend. Trunks wanted to go as well but Dende asked that one of them stay behind to protect the planet and Trunks drew the short straw.
As the fleet of four Capsule Corp. spaceships prepared to lift off, the sons of Kakarott had to share one, Goten came over to his best friend and patted him on the back, "Don't worry about it, we'll kick their asses and be back in a jiffy. I'll tell you all about it when we get home." The ships lifted off into the air and Trunks never saw his best friend again.
In space the Interplanetary Defense Empire or IDE, were already on their way to Earth seeing how a planet with the capability to produce such an amazing fighter must be subjected to their rule. Trunks was with the catfish looking God on Kami's Lookout as the ships approached each other. The IDE had an entire armada of ships each as big as Frieza's and a mothership as large as Meta Cooler's. With one hand on the Kai's shoulder, he clearly saw his twelve year old friend and his older brother get out of their landed ship in the atmosphere of a orange planet where the fleet was hovering. Powers began rising but the battle was instantly one-sided and it looked as if everything was going terribly. All the Capsule Corp. ships were shot down onto the planet below and Trunks gasped as he thought it was all over. Then something spectacular happened, Vegeta stepped out of the rubble and shot a Super Saiyan 2 Final flash into space damaging the fleet irreparably. The mothership started crashing down to the enormous planet below and Vegeta flew around the crashing ship with a boy in his hands.
Gohan was barely breathing after going up against one of the admirals of a ship and knew that he'd only beaten him by a small margin. Vegeta's destruction of their fleet angered these aliens and the Prince chucked Gohan into the distance. The twenty two year old passed out in mid-air before slamming into the ground. As Vegeta floated above the crashed armada he saw very pissed off aliens coming out of the wreckage. He didn't recognize the species at all and had no idea where they originated from.
His power was depleted as the enemy forces started coming at him. He was not alone though and out of the rubble shot Goten, Piccolo, and even Krillin. They fought desperately but Trunks knew it from the start that was all over. Supreme Kai wouldn't answer any of his calls as he pleaded to be sent there as well but besides Shin, Goku was the the only one with the ability to get him there.
The lavender haired boy was still shouting for someone to send him there when he realized Goten was the only one left. He'd watched his friends and his father fall to the different colored, different sized aliens as they got slaughtered. He was helpless and fell to his knees knowing the fate that was about to befall his best friend. Goten couldn't hold his ascended Super Saiyan mode any longer and his hair went black as his eyes closed. The boy hovered in the air and the enemies charged blasts all around him. Suddenly his eyes shot open and none of the aliens knew who he was talking to but Goten started speaking, "It's alright Trunks, you couldn't have done anything. Just remember New Namek has dragon balls too, not all is lost."
"Namek? We exterminated that whole race of slug people on our way here." Goten spun around to face a hooded man behind him who was charging a particularly large blue blast. His demeanor fell since the people on Namek had already been brought back, which meant the Earth's dragon balls couldn't do anything about it. "They just wouldn't listen, I hope the people of Earth are more reasonable."
The thirteen year old son of Vegeta watched as Goten was obliterated. The aliens had no idea who he was talking to in his last moments but it seemed like the rabble of a boy about to die. He still couldn't look away, he had to remember what each and every one of these aliens looked like so he knew which ones to make suffer. The leader in the hood turned to one of the subordinates on his left, "Damage report."
The short red alien that Trunks remembered impaled Krillin with his spiky left arm started speaking. His voice was high and squeaky, "Whatever attack the older one with the spiky hair used completely got past our shields. The machinery is fried, and on this desert planet there won't be a lot of supplies or resources for us to fix the ship. Aside from that we've lost over two thirds of the fleet and only three surrounding ships managed to escape the blast." He paused for a second not wishing to anger his boss further, "Also Admiral K'luk'fruk was killed during the battle."
The short red man looked down and saw a green fist sticking out of his stomach. The leader in the hood had appeared behind him and in his rage punched straight through him. The half-Saiyan watching was angered that he wouldn't get the chance to do it himself now. "To think that someone of K'luk'fruk's caliber could be defeated by these Earthlings. Hmmm," he pointed at some hovering men around him, "While most of us stay here, you will take two ships and head to Earth to prepare for the rest of the fleet's arrival. We have no idea how long it will take us to get there but the third ship," he pointed at a different group of mainly purple aliens, "will go back to WZU8 and inform the King on what has happened. Request additional ships, supplies for repairs, and more men. This Earth will be a challenge but it will be a prize."
At this point King Kai cut the transmission and Trunks released him. "I'm sorry, now it is up to you." The Kai said, serious for one of the first times ever, actually dreading the doom of the Earth without its heroes. He was always able to make jokes in the bleakest times but with all the Namekians killed besides Dende, there really was no hope besides the boy in front of him. There was something in his eyes though, it made it seem that putting his faith in this boy wasn't so far fetched.
"I will avenge them, if I can't do it by myself, I'll get others to help me. That ship was too damaged to get fixing and to Earth within the next year. All I ask if you is that you keep me posted on their progress King Kai." The responsible tone coming from Trunks faltered and his lip quivered. The realization was setting in, everything was up to him. Everyone else was dead and they wouldn't be coming back. 'Gohan, Father, Goten, I should have been there.' The God had no words for the boy he barely knew but nodded and slowly faded away back to Otherworld.
Gohan was on the orange planet still and was easily avoiding all his enemies that roamed the surface. The planet was twice the size of Earth and they couldn't sense his power. They also couldn't sense the other powers on the planet. After patching himself up and keeping himself calm as to not foolishly throw his life away because they killed his brother, Gohan searched out the other inhabitants of the planet. His enemies weren't able to sense energy but they did power up fast and effortlessly. His fighting style was more refined but they were so powerful, it was unreal. When he reached the residents of the planet he realized it was an old PTO base that had a group of aliens unknowing that Frieza and his family were slaughtered years ago. After Gohan explained it to them, he stole a space pod and started rushing home. He took a wide arc around the planet so as not to alert the IDE. He had felt the alien ships leave for Earth and had to stop them.
As Trunks was explaining to Yamcha, Dende, and Tien what happened, they all looked up in the sky feeling the powers getting close to the planet. "Those must be the two ships he sent. If our friends and family could destroy an entire fleet, we can stop two measly ships." The hoverships floated above the Lookout as they came down to the planet and warriors started bailing out of the ship and flying down to the platform. It was a battlefield and Trunks realized how wrong he was, his father had caught them off guard, these were all extremely powerful and he shouldn't have involved the others. Out of the corner of his eye he saw one blue alien with huge horns land a kick to Tien's chest before another one followed up by slamming down on his head. The triclops crashed through the floor of the platform unconscious and fell out of the sky what would have been miles had a certain samurai not grabbed him and pulled him into Korin's temple.
The boy finished another one of the invaders but he felt Yamcha's energy disappear and spun to find the alien's leader with his arm extended. He'd swiped clean through the man's neck and his head fell to the ground no longer connected to his body. As the guy ripped off his cloak Trunks saw a yellow creature that looked to be completely covered in scales. His power was something Trunks couldn't compare with and he took a step back. The man laughed at him and cackled like a hyena, "If you weren't such a baby then the black and green ones might still be alive." Trunks looked over to where Dende and Mr. Popo were standing in front of the palace and suddenly the yellow creature was behind them. Before he could even shout 'no!' the alien shot both of his arms through the Guardians' stomachs.
Their powers diminished quickly and all traces of ki left their bodies. "Ahh, not a lot of power for me in those two, you'll be a much better snack." A long bumpy purple tongue unraveled out of the alien's mouth and he started charging at Trunks. The boy was alone, surrounded by still more than half of the crew of the alien ships. All he could do was fight so he got in his stance and let all his anger come to the surface as he blocked the first punch.
Fists and kicks came from all around him but all of a sudden the tongue shot out from nowhere and wrapped around his legs, throwing him to the floor. He got slammed over and over until he spun in mid-air and the yellow creature spun with him, crashing to the ground. A drop of purple blood dripped from the corner of the alien's lip and he kicked it away. "Kill him," Trunks was exhausted and couldn't take it anymore, it was all over.
Then he felt something, the others didn't notice but a huge power was getting closer fast. One of the approaching crew followed the boy's gaze to the sky and pointed up. A Saiyan space pod slammed into the Lookout and no one moved. The door lifted up in a cloud of smoke and Gohan stepped out. A smile appeared on Trunks' face for the first time in weeks and he turned on the nearest alien, transforming him into a pile of dust.
Three attackers charged Gohan at the same time but he dodged all their attacks and landed finishing blows in one hit each. "You," the yellow thing seethed, "You're the one who killed K'luk'fruk aren't you? He was my friend," the bulky yellow monster sprinted forward and kicked the boy in the stomach sending him back several feet but still standing.
"He was much stronger than you," Gohan reached forward fast and grabbed the yellow man by the tongue. He was using his Mystic powers and Trunks was a Super Saiyan 2 and these aliens couldn't stop them. With a lot of force, Gohan spun around and threw the screaming yellow alien up at one of the ships before shouting, "MASENKO HA!" And annihilating both of them. The remaining invaders knew they'd lost but Trunks was fueled by rage and Gohan was as well even if he could control it better. They destroyed the rest of the aliens and then went back to their base forms, panting like crazy. They were at full power the whole time they fought which seemed like a slaughter to the aliens but seemed like a really close fight to both half-Saiyans.
Later on while the two of them sat on top of the Lookout, Tien came back up and saw the destruction. None of them knew how the process worked but they all knew the Earth needed a Guardian. Both Gohan and Trunks were still kids even if Gohan was in his twenties. The older man knew this and closed all three eyes as he accepted his fate and volunteered to be the new Guardian of the Earth. They all agreed to meet back up in a month to discuss the alien threat that would still be coming but for now they had to be with their families. Gohan went back to his crying mother who'd lost her baby boy and husband again, this time for good. Videl lived with him now next door to his old family but they figured Chi Chi shouldn't be alone and brought her to Ox King's to live. There were no living Namekians left in the universe, and that meant no more dragon balls which meant dead was dead. Trunks went back to his mother and newborn sister to help them through Vegeta's death.
Tien was spoken to once he was alone by Piccolo through King Kai. He explained how he knew all about the process of becoming Guardian after merging with Kami. The triclops drank some special water inside the palace and was told he'd live forever but still get older. It wasn't immortality because he could still be killed it was just old age and disease wouldn't be a problem anymore. Tien had Chaozu come up and become the new assistant since Popo was dead and his friend was also able to drink the water.
After a month the three fighters met on top of the Lookout along with Bulma, Yajirobe and Korin, and Chaozu. They discussed what to do about the aliens and Bulma offered to build more ships though she refused to let Trunks go. They all thought it wasn't the best idea because the Earth was already in bad shape without the rest of them. There just weren't enough of them left to handle an entire Empire if they did rebuild and came for the Earth.
Tien had an idea and being the new Guardian he figured it was his job to save the world. "We can't do this alone, there is no telling when they'll come to this planet but based on what Trunks told us they could be here anytime from one year to fifty years from now. It seems like Frieza has been replaced as the ruler of the universe and this time the person in charge is much stronger. There are no more 'full' Saiyans and we can't rely on just the two of you to save the world. No, if we're going to fight them we'll need what they have, an army."
"You think humans could be able to fight them?" Trunks asked skeptically. He avoided calling them weaklings because he knew Tien was no wimp and had just seen him handle himself in a fight. The bald man had taken down two of them before he was knocked out.
"If I could suggest," they looked down at the cat with the staff, "starting training as a young child is the best way to produce great fighters."
Bulma looked angered, "You want to take children and breed them into warriors? Rip them from their parents arms?"
"No no no," the cat wiped some sweat from his brow. "Just like Goku, Krillin, and Yamcha, these three here," he pointed at the other humans, "children without any parents, with nowhere to go. We give them purpose, tell them they're saving the planet and train them to do so." They all agreed and the plan was set. It was time for the Earth to be protected by Earthlings and who knows, maybe it'll be a full fifty years before the armada could get back to fighting capacity and be ready to take on a planet they knew they would face heavy resistance on.
The first fighter didn't kill any of them and those he defeated he let live. Besides the one who killed K'luk'fruk, he was the most powerful. Then there was the one who devastated the fleet and if there were more fighters like these on Earth, they would need to be better prepared, more trained for the next invasion.
Trunks left the Lookout and couldn't help thinking about his best friend and how he'd failed him. 'Don't worry Goten, I'll kick all their asses for you. Your death won't be in vain," the troubled thirteen year old shot off for home so he could set the GR as high as he could handle and then raise it fifty times that.
ONE YEAR LATER
Gohan was training with Trunks, both of them as high up in Super Saiyan 2 form as possible. They fought in the sky only because their ground battles were becoming dangerous to people all over the planet. Trunks ended it with a Big Bang Attack that overpowered Gohan's Masenko and they laid down far below on the grass to rest. Their fights ended with a different winner every time though Gohan did win more often. He never fought with Trunks as Mystic because if the boy couldn't match him as a Super Saiyan 2, he wouldn't even compete.
"It's not working Gohan," the teenager spoke. "I haven't found anyone willing to take on training, and even if we did, would we have time to train them between all our training?" Gohan looked deep in thought as he had been having similar thoughts. There was one kid who seemed promising but he wasn't dedicated enough and couldn't take a little bit of pain before backing out.
"You know what we should do?" Gohan started as he sat up. "We don't need to keep it a secret any longer," he received an odd look from the Briefs boy. "I'm serious Trunks, if we told people the situation, they could search us out and if they are dedicated enough then they'll be able to handle the training. We still go around looking but this way we don't have to check every person on the planet." Trunks nodded and he figured his mom could set something up.
Later that week Trunks met up with his friend and mentor at a television studio where they were supposed to go on live television in a minute. Being one of the richest people in the world, Bulma was able to get every station to air their message at the same time so everyone would hear it. "How is she?" Trunks asked as he hugged the Son boy.
"Much better, they're both doing great." Trunks nodded, glad his friend's daughter was alright. There were some complications with the birth and Gohan wouldn't allow Videl to get rid of the tail. With Goten and his dad gone, with Vegeta dead, Pan needed to continue the Saiyan race and be as strong as possible for what was coming. The doctors kept urging him to reconsider but he wouldn't hear of it. The two of them went into the tv station and had cameras put in their faces as they lifted off the ground. Trunks explained how the world was under constant threat from an alien invasion and how we need to be prepared for when they get here. They offered to teach anyone interested in saving the planet martial arts and told them where they could find them.
The whole world was in shock for several weeks after Mr. Satan confirmed the message to be true and everyone instantly believed it. The Saiyans were wrong and instead of people flocking to them to help, they hid away in fear. They figured they'd continue looking for people willing to train and leave that message out there for anyone who wants to listen.