In an alternate timeline

In this story Yamcha meets a female Saiyan and the two spend time together eventually they fall in love and have a child together this story will explore how that happens.

When they first meet Yamcha and his future Saiyan wife would be at a similar power level and that Yamcha would meet her after the Saiyan saga(after he gets revived after being killed by the saibamen). Let's say she overheard that there were magical balls on earth that could grant any wish(I'm thinking maybe she heard the z fighters talk about it via Raditz scouter) and she decided that she would wish to bring back her race after their planet was destroyed by Frieza.

She leaves the planet she is on and heads to earth (much later than Vegeta and Nappa). When she arrives on earth she starts to look for the dragon balls right away however she isn't having much luck. Suddenly she senses a power level equal to hers and gets curious as to who this strong fighter is goes out to find out who he/she is. When she arrives at the location her scouter led her too she sees yamcha training by himself and lands next to him a few feet away. Yamcha notices her and is immediately startled he says " huh who are you?!" She then Responds by saying "Greeting earthling, my name is Yama and I am a Saiyan from the planet Vegeta." Yamcha gets startled by this and says "what no way you're a Saiyan!?"

Then he notices her tail and gets more nervous but then in a firm voice he asks here "what are you doing here on earth?!" She then tells him "I picked up a signal from my scouter from a scouter on this planet, i heard that there are some magical balls know as dragon balls located here that can grant any wish, and so i become intrigued and decided to come here myself to look for them." Yamcha is stunned by this revelation but before he can ask her what her wish is she asks him " tell me what is your name?"

Yamcha then replies 'Yamcha' she then says "well yamcha, my scouter detected that you are a very strong and capable fighter on par with me, i was wondering if i could challenge you to a fight with me" Yamcha is again surprised by this but then says in a more confident manner "hmmph, okay but if i win you have to leave earth and never come back" she responds by saying I'll agree to this but only if you agree that if i defeat you then you'll help me look for the dragon balls deal?"

Yamcha then quickly responds with a smile "deal" then the two both rush at each other at the same time and they start exchanging blows, they are evenly matched at first but then yamcha eventually starts gaining the upper hand. After an hour of fighting the two fighters are both exhausted and they back off and disengage from each other landing a few feet apart from each other. They are both panting hard "haaa, haa, ha" then yamcha says " wow, i didn't think it would take me this long to beat you yama, you're an incredible fighter ha, haa, haa" yama then says "ha, haa, haa thanks, i must say yamcha you're pretty amazing as well, this the first time in a long time that i have struggled beating an opponent, and your fighting style is one i have never seen before" after catching their breath they both get in their fighting stance and then yama says "but despite the good time i am having with you, i think it's time we end this" then she starts to power up her most powerful attack (which looks similar to goku's Kamehameha beam.) Yamcha smiles at this and chuckles lightly as he powers up his own attack. As yama finally finishes powering up her attack she fires it at yamcha and says "take this!" But yamcha quickly disappers and dodges the attack at the last second. Yama is stunned and before she can react Yamcha appears behind her and unleashes his wolf fang fist attack that he's been charging and hits her directly in the back back causing her to be sent flying a few feet in the air and landing roughly on the ground in a small crater. Yama is on the ground in bad condition and is saying "uhhh what a strong attack" Yamcha then walks up to her and says "so, looks like i won, i have to admit though that was a strong attack and i would've been done for if you hit me with it. I enjoyed my time sparring with you Yama. But a deal is a deal and as part of our deal, you have to leave now."

Yama then starts to get very sad upon hearing Yamcha's words and starts to slowly get up and she says to him a heavy and sorrowful voice "i understand, I'll leave now goodbye Yamcha I won't trouble you anymore and you won't have to see me again" Yamcha sensing sadness in her voice asks her " Hey is everything alright you sound so, sad?" Then she sniffles a little and says " oh no it's nothing i don't think you would understand my greater purpose in doing this like i said you won't have to see me again" she turns around and starts to walk off but then yamcha says "Hey wait!" Yama is a little surprised by Yamcha's words and she turns around to ask "what is it?" in a calm and curious manner. Yamcha then asks her "you never told me your wish, the one that you said you would use if you got

The dragonballs what was it that you wanted?" Yama taken a little aback by Yamcha's response takes a deep breath and says calmly " well if you must know i wanted to wish for the resurrection of my race and the planet vegeta" Yamcha gasps and then yama continues by saying "but i guess since i won't be seeing you again I'll tell you the full story, ago an evil space tryant named lord frieza destroyed my home world and species, i was one of the few survivors of this catastrophe and when i heard the news i was devastated. I had never even met my parents and i never met my parents either they were also killed by that monster." Yamcha feels great grief hearing Yama's story " so i vowed one day that i would bring back my race somehow and maybe one day we could beat that evil tyrant so that no other race in the universe has to suffer the same fate! But unfortunately i don't think that will be happening now" Yama puts her head down and proceeds to walk away back to her space pod when suddenly yamcha says "Yama wait please don't go!" And grabs her by the shoulder Yama then quickly turns around suprised again and then says " huh yamcha what is it now?" Yamcha then says " i want to help you find the dragonballs" this shocks her and she says "huh what?" Yamcha then explains "at first when you got her i didn't know what to expect, my experience with saiyans hasn't been the best if I'm being honest.

There were two evil Saiyan's who came her a year ago looking for the dragon balls and they would kill anyone who got in their way, i was unfortunately one of those casulties. I initially expected you to be the say way. But after fighting you and hearing your story i was moved and now i realize your nothing like them you're strong, brave, and you have a good heart and i respect you for that." Yama's eyes widen at Yamcha's words " and that's why i want to help you with your mission. So please don't go stay with me and I'll help make your wish come true." Yama is so overjoyed that before yamcha can react she hugs him tightly and she says "yamcha, thank you" Yamcha taken aback again says chuckling "uhm sure happy to help" then Yama notices how tightly she is hugging yamcha and that her boobs are pressing against his chest very tightly and gets a huge blush. Yamcha was also feeling this recently too and started to blush but then yama quickly breaks off the hug still blushing bright red she then says to yamcha a little nervously "well uhm I guess we should start looking for those balls then." Yamcha then says " yeah i guess we should but first how about we rest a bit that fight was intense" then Yama smiles says "yes I agree, do you know where we could find suitable resting quarters yamcha?" yamcha then nods his head and they go to his house to rest up after that yamcha then takes yama to Bulma so that they can meet and she can help them find the dragon balls also. This is the story so far and I was also thinking that they could have a son called Yamku or Yardock.