Hey there, AntiHero here! This wasn't an idea I planned to carry out, but after some thinking about it for some time, I decided "Eh, why not? It's a Dragon Ball Z fanfic so it ought to be a good idea. As I said before, DBZ is my favorite fanfics, and the best ones to me are the ones about Gohan and/or Mirai Trunks. So I came up with another fanfic idea featuring our two favorite Demi Saiyans. There will be some OCs and other characters. For now just sit back or lay back and enjoy the story.

Disclaimer- I do not own Dragon Ball Z or Young Justice

Chapter 1-

After spending a week in the hospital in order to recover from their battle against Bojack and the Hera-jins, Gohan and Mirai Trunks were flying through the skies to a place where they could have sparring match. While in the infirmary, the half Saiyans recalled what happened during the intergalactic martial arts tournament. The two wondered how it would've gone if it wasn't interrupted, they came to the conclusion that the two of them would've had to fight to determine would get to fight another contestant or Mr. Satan to become the tournament champion.

This however brought an important question too their minds, who would won if they ever fought? Once they were discharged from the hospital Trunks was planning on returning home to the future, so the boys figured now was a good time to have a friendly fight, and the best place to do that was Trunks' timeline. Trunks went to the Capsule Corporation to pick up some things for the future. As the Demi Saiyan walked pass the gravity chamber, he caught a glimpse of his father training. Trunks knew better than to disturb his old man while he's working out, but he couldn't just pass him without greeting him.

"Hello father." said Trunks.

"Hey." Vegeta greeted back before getting back to his training.

Trunks smiled, although it wasn't much of a greeting, but that was the most anyone could get out of Vegeta. The half Saiyan left his father in peace and went to look for his mother. He went over to the garden where his grandmother was busy watering plants.

"Hello grandma." greeted Trunks.

"Trunks! Hello sweetie." greeted Mrs. Briefs. "It's good to see you, what brings you here?"

"I was looking for mom. She's suppost to give me some supplies for the future." explained Trunks.

"Oh, well Bulma's not here right now, she went out." said Mrs. Briefs. "But she did say that she left something for you in the lab. My husband should be there right now, he'll probably know what it is."

"Thank you. I'll go see him right now." said Trunks before he left. The son of Vegeta walked through the halls of the house until he came across a room that said laboratory on the door. He stepped into the lab and was greeted by a small black cat; he petted it and looked around the lab. He spotted his grandfather working on some hovercraft. "Hello grandpa." Trunks greeted the old man.

"Well hello there, Trunks." Dr. Briefs greeted his grandson. "What can I do for you?"

"Mom had something to give me before I returned to the future, grandma said you might know where it is." said Trunks.

"Hmmm. Oh yes, Bulma did leave something for you here," the head of the Capsule Corporation stopped his work and walked over to a table where he picked up a case full of capsules. "Here it is. A capsule case with everything you need for the future." He opened the case and held up each capsule as he explained what was in it to the Saiyan Prince. "The 1st one contains a newly upgraded capsule home, the 2nd one has some money, 100 million zeni to be exact, the 3rd one has food supplies, the 4th one has some scouters, Bulma thought they could help you and her future self rebuild the Capsule Corporation, the 5th a chest full of different sets of Saiyan armor that Vegeta asked her to make, the 6th one contains a personal laboratory that Bulma and I built for you in case you're interested in following our genius footsteps, and the 7th one is your own gravity chamber, complete with battle drones, advanced thermostat for temperature training, and healing tanks.

"Thank you." said Trunks, he then held up the 8th capsule. "What's in this one?"

"Oh, that's actually something for Gohan. Bulma thought you could help him with a little project he wants to work on." replied Dr. Briefs.

"I see. Well, I'll be going now." said Trunks; he turned to leave when a thought came to his mind. "Um, are you sure this is the case of capsules for me? Because mom used to tell that you sometimes get hers mixed up with yours."

"Ha ha! Don't worry, Bulma made sure that I wasn't allowed to touch your capsule case unless you came to get them." said the old genius.

"Ok, thanks again. Bye." the Saiyan teen then left the Capsule Corporation building to go find the son of Goku.

Moments later, Trunks flew through the sky until he saw something in the clouds; he smiled as he flew towards his fellow Demi Saiyan. "Hey! Gohan!" cried Trunks. Gohan smiled and waved at the time traveler. "Hey Trunks, what took you so long?" Gohan asked the lone warrior.

"I went to the Capsule Corp. to pick up some things for the future." Trunks explained as he brought the case of capsules. There's a capsule in here that's for you. Do you know what's in it?" Trunks held up the 8th capsule for Gohan to see. Gohan's face suddenly grew sad as he looked at the capsule.

"It's just something that I'd really like to finish, for the sake of an old friend." said a depressed Gohan. His face then turned happy as he said "But enough distractions, are you ready to do this?!"

"Let's settle the score." said Trunks.

The two fighters then flew off to find an uninhabited landscape to have the sparring match. At the hospital, Bulma and Chi-Chi had just asked the nurse for the room where the Z fighters were recovering. The two mothers then went to the room and were greeted by the three human Z fighters in bandages, Chiaotzu, Puar, and Oolong. They looked around and were surprised to see neither of their sons were in the hospital beds. "Hey, where are Gohan and Trunks?" asked Bulma.

"Nice to see you to Bulma," said Yamcha. "And to answer your question, the Saiyans aren't here. They left as soon as they were discharged."

"What?! They left and didn't bother to come home to their mothers?!" cried Chi-Chi

"Sorry Chi-Chi, but when they left, all they said was that they had a score to settle." said Krillin.

"What they mean by that?!" asked Bulma.

"We're doing fine by the way. The Doctor said we should be well enough to leave in four hours." said Yamcha.

"That's nice," said Bulma disregard the desert bandit. "Now what did the boys mean by having a score to settle?"

"Well, at the intergalactic martial art tournament, they were two of the final contestants." stated Tien. "They were probably suppose to fight each other for the championship, so now, they're going to fight to see who would've won the tournament since it was interrupted."

"But they just got out of the hospital! Why would they want to injure themselves again?!" asked Chi-Chi.

"They can't help it. They are Saiyans after all, fighting is in their blood." said Krillin. "Plus their fathers' rivalry lives on in them now."

"Did they say where they were going?" asked Bulma.

"Nope. They seemed anxious to start the fight." said Chiaotzu.

"Don't bother trying to interfere with their fight or you'll be hospitalized next." warned Oolong.

"Maybe they went to Kami's lookout, that's a good place for a friendly match." suggested Puar.

"We should go check as soon as were discharged." said Krillin.

"I just hope they don't get into any trouble," said Chi-Chi.

With the Demi Saiyans...

Gohan and Future Trunks landed in a wide deserted area in the mountains by north city. The landscape was white due to it being covered with snow. The mountains surrounded the entire place. The two Saiyans descended to the ground.

"We'd better hurry. Ours have probably reached the hospital, so they know we've discharged. Are you ready to go Gohan?" asked Trunks.

"Yeah. Good thing I asked Piccolo to give me a new gi and weighted cape, or else I'd be freezing." said Gohan. "You know, Piccolo and I used to train here sometimes."

"I can see why, this place is great for anyone wanting to train in solitude." said Trunks. "Your future counterpart actually took me here for training."

"Neat. Now, how about we get going so we can find out which one of us meant to the Intergalactic martial arts champion." suggested Gohan. "I can't wait to see the future.

"I'm glad you're excited about seeing my home." replied Trunks. "But you shouldn't expect much, my world is still recovering from the destruction caused by the Androids and Cell."

"Too bad the Dragonballs are gone in your timeline." said Gohan.

"It doesn't matter now, we're doing fine fixing it ourselves." said Trunks. "Now come on, let's go."

With the half Saiyans' mothers,

Bulma and Chi–Chi were riding in Bulma's plane. They came up to Korin's tower and Bulma steered the plane vertically. They eventually made it to Kami's Lookout. Unlike Bulma, Chi-Chi had never been there before, so she was amazed how something this magnificent could maintain its position above Earth's clouds. "Wow, so this is the Lookout where Goku and Gohan trained for a year in one day?" asked Chi-Chi.

"Yep. This where Kami used to live." said Bulma."Beautiful, isn't it?"

"It's amazing! I can't believe Goku said no about taking being Kami's successor and living in his palace." said Chi-Chi. "This looks like a great place to live in peacefully."

"If you ladies are done sightseeing, state your business and be off! I'd like to continue my training in peace!" said a voice from under the plane. The mothers looked out the windshield and saw the former Demon King standing under their plane with his arms crossed while frowning at them. Dende and were standing behind him waiting patiently. Bulma parked the plane on the lookout and the women stepped outside.

"Bulma, who's the mini Piccolo?" Chi-Chi whispered to her friend.

"That's Dende, our new guardian. We met him after his planet was destroyed and the Namekians came to Earth." replied Bulma. "He's friends with Krillin and Gohan, remember?"

"Oh yeah. I remember now." said Chi-Chi. "He looks just like Piccolo, except, happier, cuter, not as scary looking."

"You know I can hear everything you're saying right?" Piccolo asked the women.

"Welcome ladies," greeted . "I s there something we can do for you?"

"Our sons were discharged from the hospital and want to fight to settle a little score they have going." explained Bulma. "We came to see if they were here."

"We thought they'd be here in order to spar without disturbance." said Chi-Chi. "My son should be resuming his studies, not fighting with friends."

"Well, they're not here." said Piccolo. "Although, Gohan was here a little while ago."

"He was?" asked Chi-Chi.

"Yes. He asked me to make him a new Gi similar to mine." the Super Namek explained. "I asked him if he was planning on doing some solo training, he said that was going to spar with Trunks to settle their score."

"Did he say where he and Trunks would be?" Bulma asked the Namek.

Piccolo shook his head and said "All he said was that their battlefield wouldn't be that far from home."

"Great! Now how are we suppost to find them?" asked Chi-Chi.

"We could find them for you," Dende offered the mothers. "Piccolo and I can use our Godly vision to locate anything on Earth from here. We could locate Gohan and Trunks for you."

"Really? Then do it now!" cried Chi-Chi, making the Namekians cringe. "When I find that boy, he's gonna be in so much trouble!"

"No wonder my pupil wanted to get away from her. The female is a real pain." thought Piccolo. "Goku's lucky he decided to stay dead, now he's a free man."

The former guardian and the new guardian walked over to the edge of the lookout, they looked downward to begin their search for the Demi Saiyans. Down on Earth, Trunks pulled out a capsule from his case and pressed the button. He let fall to the ground where it transformed into Trunks' time machine. "You might wanna hurry this up, I get the feeling that we're being watched." said Gohan. The Saiyan teen nodded as he opened the glass cover for the machine. The two half Saiyans hopped into the time machine and sat down as the glass closed. The time traveler started pushing the buttons to set the machine's destination.

"All systems go! Prepare for take off!" said Trunks as he pulled the lever. The machine began to start up and was soon blasting off into the sky. The time machine eventually started emitting white light before suddenly vanishing into thin air. The Namekians watched with wide eyes, trying to register what they just witnessed.

"Hey! What's taking so long?" asked Bulma. "Have you guys found our sons yet?"

"Gohan and Trunks are…gone." stated Piccolo.

The mothers of the half Saiyans were silent for a few minutes before they both scream "WHAT?!" Their loud voices damaging the sensitive ears of the Namekians.

"Please calm down ladies," requested . "You're loud voices are causing Piccolo and Dende pain."

"What do you mean they're gone?!" asked Chi-Chi. "Where are our sons?!"

"They went to the future," answered Piccolo.

"Huh?!" replied the women.

"It seems Gohan and Trunks have decided to have their sparring match in Trunks' timeline." Dende explained. "They just left in Trunks' time machine, so their definitely going to the future."

"So that's what Gohan meant when he said that their battlefield wouldn't be far from home, since it's technically the same place, just in a different timeline." said Piccolo. "There's no way for us to go after them, so we'll just have to wait until they've settled their little score and return to this time period."

The Saiyan wives looked like they were still mad, but Bulma calmed down eventually. "I guess there's nothing we can do about it now, we'll just have to wait for the boys to come back from their trip." she sighed. "At least this means I get to see my boy again for he leaves me forever."

Chi-Chi however, was still very mad. "OH THEY'D BETTER COME BACK! AND WHEN I GET MY HANDS ON GOHAN, HE'S GOING TO BE IN SO MUCH TROUBLE!" She yelled in anger.

Thirteen years in the future…

The time machine suddenly appeared in the sky. The machine descended to the ground and landed in the front yard of the Capsule Corporation. When the machine died down, the two half Saiyans stepped out of the machine. Gohan looked around in excitement while Trunks returned the time machine to its capsule form. "Wow, so this is the future. I t looks so much like my time period." said Gohan. "Except, well, there are a lot of damaged buildings here."

"Yeah, we haven't completely finished reconstructing our cities." said Trunks. "The Androids left a huge scar on this planet that will take a long time to recover from."

"I can't believe I'm in the future, I'm a time traveler now!" said Gohan.

"Trunks?! Is that you?!" Trunks' mother called from inside the house.

"Yeah mom, it's me!" replied Trunks. "I'm home, and I've brought a friend with me!"

"Really? Who is it?" Bulma asked as the Demi Saiyans entered the house. They found Bulma in the living room, sitting on the couch reading a book. When she heard someone entering the living room, she looked up from her book. Her eyes nearly popped out of her head when her eyes gazed upon the half-breed from the past. "G-Gohan? Is that really you?" she asked the young boy.

"Hi Bulma," Gohan greeted her while flashing the famous son family grin.

A/N: And that's the first chapter. I know it might be early since the last time I posted chapters for my fanfics but if I do end up posting this before August, all I can say is that I had some time to kill and I kinda typed fast. I'm sorry if it's a little short and not attention grabbing but I assure you, the story will get better. Just stay tuned and you won't regret it. Send your reviews! TTFN AntiHero out!