PART 1: The Saiyajin Girl
Trunks looked up to see a girl of about his age standing before him. She looked like no other girl he had seen before. Her hair was black as night and stuck up in all directions. She had eyes that could kill you and her body was slender but you could tell she had muscles just by looking at her. And then wrapped around her waist like a belt was a tail. She hovered down to him.
“Hello. You looked shocked to see me.”
Trunks stared at her a second before asking, “Are you a Saiyajin”
“You know of us.” She asked shocked that people knew of her race. 
“Yes” Trunks replied, “My father is prince of the Saiyajin”
She looked around at him she looked at his back and saw no tail “If your father is Ooji Vegeta were is your tail” all Saiyajin had tails.
“My mother cut it off when I was young. She knew what happened if exposed to moonlight.”
“Speaking of the moon, shouldn’t it be out soon”
“Yes, so you must hide. What’s you name”
“Juu-san” she replied coolly, “and yours”
“Trunks”
“Nice to meet you Ooji Trunks.”
“Would you like to meet my father? I think he would be glad to meet another full-blood Saiyan, besides Kakarrot.”
“Yes please Ooji Trunks”
“Oh and one more thing, stop calling me Ooji Trunks”
Trunks walked in to capsule corp. and saw Bulma sitting at her laptop working peacefully.
“Juu-san this is my mother, Bulma.”
She looked up to greet the girl Trunks had brought home “Hello. Who’s this Trunks?"
“Mom this is Juu-san, she’s here to meet Tousan is he here.”
“Yeah, he’s in the training room.”
“Ok, come on, follow me. I’ll show you were he trains.”
“Hey Trunks” Juu-san asked, “Why doesn’t your mother have a tail?”
“She’s human.”
“Hey dad guess what I found,” Trunks yelled as he stepped in the room.
“What did you find, boy”
“Hey Juu-san come here”
“Trunks another girlfriend. I don’t want to meet her, now let me train.”
“She’s not my girlfriend. I brought her over to meet you.”
Juu-san walked in and bowed down in front of Vegeta. He looked at her questioningly.
“Juu-san getup. Why do you bow before me?"
“As you say Ooji Vegeta.”
Vegeta looked at his son. Why was she calling him prince Vegeta? Nobody did that anymore. No one, not even Kakarrot. 
“Girl why do you call me prince”
“Are you not the prince of the once known planet of Vegeta-sie?"
“Yes, now what do you want from me.”
“I am your humble servant, I ask nothing of you.”
“She’s a full-blood like you and Goku.” Trunks broke in.
She showed her tail, and waved it wildly, yet in a prideful and dignified way.
“Juu-san, excuse us a second.”
She walked away and went out the room. She would hear this, but at least she would be somewhat of a ways away.
“Trunks” Vegeta said, “Do you like this girl”
“I saw her and thought she was one of the most beautiful things I’ve ever seen father, why.”
“She has no mark on her shoulder. If she did I would have seen it.”
“What’s the point of a mark on her shoulder.”
“A bite mark on the shoulder in Saiyan culture is the symbol that you’ve been mated.”
“Oh, then why don’t you have one?”
“Bulma is a human”
“Oh.”
“So tell me again what this has to do with me.”
“Trunks if you like her. Claim her”
“Why”
“So you don’t thin out the Saiyan blood anymore.”
“But what if I don’t want to.”
“Get lost.”
“Ok.”
Part 2: The Setup
Goten sat in Trunks room waiting diligently for him to come back from sparing Vegeta. It was expected that he would take a while. He normally did, but this seemed ridiculous. Finally somebody came in.
“Hey Trunks, was happening”
“Goten, I’m not Trunks”
Goten gulped, “Gomen Vegeta”
“Its ok, I need your help with something”
“Ok sure, what”
“I’m setting Trunks and Juu-san up.”
“Ok, I can help do that, but who’s Juu-san?”
”She is a Saiyan girl he met”
“Oh, ok so what do I do?"
Vegeta explained it all to him. They would have a party. And he had to bring Marron as a date. Pan would go with Juunana, which meant Trunks would have to bring Juu-san along. 
Everyone knew what was going on but Trunks, of course. He would be left in the dark on this one. They all agreed him and Juu-san should get together. It would be him or Goten and well Goten had his eyes set on Marron, which left Trunks.
“Hey, Trunks” Bra called as she pranced into his room, “Who ya brining to the party tomorrow.” 
“Pan maybe. I’d like to bring her, but I don’t have the nerve to call.”
“You don’t need to she’s going with Juunanagou” she hated that idea as much as Trunks did, but Tousan said she had to inform him and do this to him so she did. She feared for her life is she angered him.
“Then Marron”
“She’s going with Goten, and you know he wouldn’t like you stealing his girl.”
“Well I’m not taking you.”
“Then who will you bring?”
“Juu-san”
“Ok, well I’m going to find something to wear.”
“Goodbye Bra” 
“Yeah bye Trunks”
Trunks went out the window and over to Chi chi’s her and Goku had offered Juu-san to stay with them. She had of course accepted the offer. He flew up to the guest room window and knocked on it lightly. Juu-san came to it.
“If you’re asking me to the party, I’ll go with you, so leave. I have to go.”
“Ok then Bye”
Trunks flew home. He was happy for some reason he liked this Saiyajin girl. Why he couldn’t explain, he just did.  And Vegeta wouldn’t mind. 
Part 3: Backfire
“Why did I give into this again” Gohan whined to Videl as he watched Pan kiss Juunana.
“To help Trunks,” she stated.
“That’s not fair. I mean look at her she’s all over Juunana, and I don’t trust him.”
“She’s acting Gohan, and you’ve never trusted him. You don’t even trust Juuhachi and she’s married to Krillin.”
“Well they tried to kill me along with everyone I knew.”
“I know Gohan, now here they come. Be supportive.”
“I’ll try, but don’t expect much”
“Hi daddy” Pan said as she hopped in front of him, still holding Juunana’s arm.
“Hello Pan, Juunana”
Juunana nodded in response it was an understood hello. Neither Gohan nor Juunana like the other. Juunana whispered something in Pan’s ear and they left. Gohan only too relieved to see the android go. 
“See was that so hard,” Videl whispered to him.
“Yes.” 
She rolled her eyes. A true Saiyajin if she ever knew one, Proud, arrogant and sometimes stupid. She was just amazed that he hadn’t attacked the food supply yet.
Gohan spotted Trunks off to the side of the room. He looked so lonely there. He walked up to him.
“What’s wrong, Trunks”
“I don’t know. I think she stood me up. I spent all day trying to find the perfect outfit and she’s not here.”
Gohan looked around a second then offered some advice “Trunks, did you notice that my parents aren’t here either and she’s been staying with them. And knowing my mom she’s trying to make her look perfect.”
“Good point Gohan.”
“Now go out and have fun.” He mentally added <someone aught to.>
“Trunks” a young girl squealed as she walked into the room. 
 “Hello Juu-san. Do you know how to be conspicuous? This is my family and here you are yelling out my name. It’s not always pleasant. And I have a feeling that Dad will be using this against me later”
“Oh sorry. I didn’t know. You got all dressed up.”
“Well so did you, but I can’t complain you look stunning.”
She smiled, “Well thanks, Chichi went out and bought this special for me to wear tonight.”
He nodded, “Sounds like Chichi” then in a low voice, “She’s weird about these things.”
“Don’t talk bout her like that” Goku hit him on the back.
“Sorry Goku.”
“Its ok. Now I see why Vegeta set you two up. You do make a cute couple.”
“What did my father do!”
“He set you two up. Do you know how long it took him to get Gohan to let Pan come with Juunana? They’re really a couple but he doesn’t know it.”
“Thank you Goku I’m going to get him for this later, but now I’m going to spend time with the prettiest girl here.”
“Anytime.”
Trunks took hold of Juu-san’s wrist and led her upstairs.
“Really I’m the prettiest girl here”
“To me you are”
“Were are you taking me?”
“It’s a secret.”
He led her up to his room. It looked decent for a change. He grabbed the small picnic he had made and opened the window.
“Can you fly?”
“Are you a Saiyajin?”
“Point taken, follow me then”
He led her off into the park to a big weeping willow. He had been there earlier that day and had put down a blanket as some dishes. And in the middle sat a candle that was waiting to be lit.
He sat down on one side of the blanket and she sat across from him. He lit the candle and brought out his small picnic. She looked at him amazed. Had he done this all just for her?
“I wanted our first date to be special. And I don’t want to go to my mother’s party. I don’t like being bombarded by family.”
“Well I like this better.”
“Me two, hey Juu-san. I have something I want to ask you”
“Well what is it”
“I was wondering why don’t you have a normal Saiyajin name instead of a number.”
She went silent as second.
“I have to go!” she said in a sudden rush getting up.
“Wait, what’s wrong. Why do you have to leave?”
“You’ll hate me if I tell you.”
“I could never hate you. You’re one of my kind and one of the prettiest girls I’ve ever met. I couldn’t hate you.”
She sat back down a somber look on her face; she took a deep breath.
“Well I’m sure you’ve heard of Dr. Gero so I don’t have to explain that. And you know that he created many androids. I’m one of those creations, only I’m a Saiyajin. I’m of course 13 as you’ve so diligently figured out. He failed on me though only erasing parts and pieces of my memory. History of my planet and people lasted, but all else was lost other than me ki that I kept also. I ran from him and hid for many years. I heard of the downfall and tried to find somebody who was like me. It took awhile and I sensed some great power, that of my kind. The place were it was when I located it was Kame House. I met that Master Roshi and told me to go find you. I of course found you with little ease and watched you a few days and then showed myself to you. The rest you already know”
“So you’re like Juunana and Juuhachi then. But you’re one of my kind. My father wouldn’t like knowing all that, so I say we just don’t tell him. He really would get angry.”
“Ok,” she whispered as he came near to her. 
He wrapped his strong arms around her and kissed her gently on the neck. She of course retaliated to this and pulled him up and kissed him on the lips. The kiss deepened. 
Trunks slowly trying not to break the kiss unbuttoned her dress. It easily slid off her shoulders revealing pale white skin. Her tail lashed out from around her waist where she had confined it, as to not let it be seen. Then he worked his hands around to her back and undid her bra. After realizing exactly where this was going she ripped his shirt down the front and flung it off him. His pants came next. She as carefully as she could unzipped them and he helped her kick them off. 
***
Meanwhile back at Capsule Corp. Vegeta was sensing some very high power levels. One he knew well and another he wasn’t sure of. Gohan, Goku, Goten, Pan and Bra all felt them too. Bra worked her way to Vegeta. 
“Daddy” she said tugging on his jacket “Do you feel Trunks’ power. Its huge.”
“I know. I feel it.”
Bulma upon hearing that her son’s power level was high immediately demanded that they go assist him in battle.
“Woman, calm down” Vegeta said, “If I know Trunks he’s fine. He doesn’t need our help.”
“Well I don’t care I want you to go find him and help him so he doesn’t get hurt.”
“Vegeta you should do what she says. I can tell that by now he’s gone SSJ and that other power is just as strong. Me, Gohan and Goten will come along too.” Goku said
Juunana spoke up “Hell, I’ll go. I feel those powers and this is one battle I don’t want to miss.”
“Yeah I don’t want him to get hurt. He may be as stupid as his father is at times but I’m willing to help him” Pan piped up.
“He’s your son and you’ll go help him right now. You have people to back you up now go.” Chichi burst out.
Bra added, “I’ll stay here with mom and Chichi, we all know there’s no arguing with Chichi.”
Vegeta sighed. She had a point once Chichi spoke you did or died. “Lets go but I’m telling you he’s fine.”
Vegeta and the gang landed in the park and followed the power to a weeping willow tree. Behind the branches they could see bright patches of light caused by a figure in SSJ mode.
Vegeta instinctively pulled back a few branches. Even he was awestruck by the sight that met his eyes. Trunks was with that Saiyajin girl both of which were in SSJ mode and neither of which was wearing the slightest inkling of clothing. They both had bite marks on the left shoulder and still even if they could feel his presence they went at it with full force. He dropped the branches and turned to the group.
He grimaced “When I said he was fine I thought he was just showing off his power, and when I set them up I didn’t mean for this to happen.” He said.
They nodded none of them could speak. Trunks was the last person they would expect that from. 
“Guess he takes after you, Vegeta” Goku admitted.
“Shut up”
“Hey guys” Gohan shouted, “Where are Pan and Juunanagou.”
“They were here a second ago.” Goten whispered, trying not to disturb his friend.
“You don’t need to whisper, Trunks is clueless that any of us are here.”
“Oh, well I bet she went off with her boyfriend.”
They all stared at Goten. 
“What do you mean her ‘boyfriend’?“
“Well her and that android guy have been going out for like a few months-“
“It’s been a year Goten” Goku interrupted him.
“Hold up. Dad you knew about this and didn’t tell me. Why on earth would you not tell me?”
“She was happy and you’d wring both their necks so I figured it was best to leave you in the dark.”
“Hey Gohan you feel that” Goten whispered to frightened to speak louder.
“Yeah, lets go that’s Pan. And I’m telling you Goten next time we spar I mean it I’m gona beat your head in”
“You’ll do no such thing. Your mother would kill you” Goku scolded.
They took off ignoring that fact. They followed Pan’s power, which was slowly rising. They found her and Juunana off sitting of a bench not far from were Trunks and Juu-san were. Juunana had his arms wrapped around Pan’s waist and her hands were locked behind his neck and they were kissing patiently.
“You get your cybernetic body off my daughter” Gohan yelled.
The pair jumped. Juunana obediently got away from Pan. Gohan came up to him and was forming a rather large ki ball, which he looked ready to fire at Juunana.
“Pan, why in Kami’s name were you doing that. And don’t say its acting. I know damn well that was not acting. And why were you dating him behind my back for a year,” He yelled not giving her the chance to answer.
He then looked at Juunana “And you. Why do you do such things to me? First you try to kill my father and any of us who interfered and now you’re dating my daughter. You scum bag. I don’t EVER want to see your face near me or any of my family and friends. And yes I realize you’re Krillin’s brother-in-law and I don’t give a damn. If you come near any of us again I swear I will beat you into the ground so hard you’ll wish you hadn’t been brought back to life with the Dragon Balls. Do I make myself clear.”
“Gohan calm down!” Goku instructed.
“No dad. That… thing is low down scum and I will not let him come near my daughter.”
“Gohan, go back to Capsule Corp.”
“I said NO” Gohan yelled at his father, “I will deal with this myself. She is my daughter and I’m doing things my way.”
“Daddy, mom said I could date him. She knew all along.” Pan broke in, not wanting to see her dad and grandfather fighting she knew that could ugly and not to mention very bloody.
Fuming with anger Gohan flew off and went back to Capsule Corp. Goku came with Juunana at his side and Pan was talking to Goten. They all knew it was gona be a long night.
Upon arriving at Capsule Corp. Gohan grabbed Videl by the wrist, not caring weather he broke it or not, and dragged her out front. When Pan arrived they got into his car and left. Juunana flew over to the Son House; Goku said they needed to have a little chat before Gohan got to him. Goku went and picked up Chichi and Goten rode home with them. Bulma demanded to know were Trunks was the second Vegeta walked in the door.
“Woman, I told you he was fine. And I’m telling you again he is. Why his power is so high I will not say. I want to block that seen as far out of my memory as possible.”
“Vegeta!!!” She yelled loudly, “What’s wrong with my son.”
“Fine, Woman, you want to know that bad. I’ll tell you. He’s our screwing that Saiyajin girl. Ok.”
She stared at him not believing this. Her son wouldn’t do such a thing. She went to yell at him to tell her the truth but he had done his little teleportation act. Not five minutes later Trunks and Juu-san came prancing in. He had on no shirt and was carrying a picnic basket.
“Were have you been” She demanded, “and where’s your shirt.”
He gulped not ready to explain. Vegeta came downstairs again.
“See that, Woman” he pointed to a bite mark on his left shoulder. “Do you know what that is? That’s showing that he’s mated and do you see the one on her. It means the same thing. They’ve mated one another. Now when I tell you something you ought to learn to believe me.” 
Bulma stared at her son in horror. How could he do such a thing?
“Trunks why would do such a thing”
“Why are you making a big deal out of it? You and dad weren’t married”
“Trunks you know damn well that’s different.”
“How?” he shot back.
“I’d known your father for only Kami knows how long before that night and you two just met.”
“She’s one of my kind! So deal with it.” He yelled as loud as he possibly could and then stormed off to his room. 
Juu-san went to leave.
“Oh no you don’t” Bulma yelled.
“What. You don’t want me here. So I’ll go. I learned many years ago to leave my past behind me. You have to when your life is stolen away and you’re only given glimpses.”
“I said you don’t. Something’s wrong at Gohan’s and Goku was upset about something so you can’t stay there. You can stay in the spare room here, or if you want you can share a room with Trunks”
“Thank you. Why are you so nice towards me when you just yelled at Trunks like he would see no tomorrow.”
“I have to scold him. It’s the way we do things here. He’s not married, I know ‘Saiyan don’t marry.’ Well you will I got Vegeta to now you two will get married. And really I’m happy for you. He finally found someone. He’s always been so lonely.”
Juu-san went up to Trunks room. He was sitting on the bed.
“Get lost Bra,” he yelled.
“I’m not your sister” Juu-san whispered. 
He looked up and smiled. He knew that if she was still here that meant Bulma had insisted she stay the night. 
Bra came prancing in just as she watched her brother and Juu-san kiss.
“Don’t you get sick of that stuff” she sighed.
“Get lost Bra”
“Ok. But I’d like to compliment you two. I’ve never seen mom that angry.” And she skipped out the door.
Epilogue
“Look at her go” Bulma yelled as she watched her granddaughter run across the yard. 
“You can’t get away form me,” Nina hollered
“Yes, I can” Nikola hollered back.
“Nina, come on time to go. Say bye to Auntie Bulma” Juunana said calmly as he walked out in the yard. 
“Ok, Bye-bye Aunt Bulma. Me come back again tomorrow.” Nina said in her high-pitched squeal. 
“Thanks again for watching her for us.” Juunana told Bulma.
“It’s a pleasure, plus her and Nikola seem to get along great.” She told her. “And speaking of Nikola its time for her to get her nap.”
“No! Grandma, no nap” she screamed.
“Bye Bulma” Juunana said again.
Bulma went to get Nikola and she ran off. She was too fast for Bulma to catch with all that Saiyajin blood in her.
“Vegeta.” Bulma yelled.
“Woman, what do you want now.” He yelled back.
“Can you help me catch Nikola she doesn’t want to take her nap?”
“How many times do I have to tell you, Woman. Saiyajin don’t need naps?”
“Vegeta, either you help me catch her or you’re sleeping on the couch tonight.”
He rolled his eyes. He didn’t want to do this but it beat the couch. He teleported in front of Nikola.
“Come on Brat, its time to take a nap.”
“Ok grandpa. Me’ll take a nap.”