Tights (Nikon23's Extended Universe)

Aya ''was the second girlfriend of Yamcha, that he begans dating, shortly after breaking up with Bulma. she was unseen in Dragon Ball Z and Dragon Ball GT. over the years, she eventually becomes the wife, and the mother of their son, Yincha, and appears in Dragon Ball SF and Dragon Ball GF.''

Android Saga through Cell Games Saga:
after breaking up with Bulma, Yamcha begans to date Aya, however she is only mention and never seen in the anime or magna. however, Yamcha jokingly propose he wish for a necklace for the said girlfriend, after the defeat of Cell.

Majin Buu through Kid Buu Saga:
7 years later, she and Yamcha break up similar to why Bulma left him in the first place. she along with the inhabitants on Earth are killed by Super Buu's Human Extinction Attack. she is later revived by the Namekian Dragon Ballls along with everyone else including Earth.

Baby Saga through Shadow Dragon Saga:
years later in Dragon Ball GT, she along with everyone else on Earth are possessed by the Tuffle parasite, Baby. she along with everyone else on Earth are later cured by the scared water. a year later, she helps contribute to Goku's Universal Spirit Bomb along with almost everyone else on Earth.

at some point after Goku's departure, she and Yamcha reunite and he finally marries her. however she doesn't meet goku and the others offically until a few years later in Dragon Ball SF.

Generation Saga through Cobra Saga:
A year later, she gives birth to their son, Yincha, in the 791 Age. 6 years later, she is finally introduced to everyone and remains in the background. she observe the 32nd World Martial Arts Tournament, cheering on her husband and son, as they compete.

a year later, she witnesses her husband's death at the hands of Turles, she is eventually united with her husband after he is revived by the Gold Star Dragon Balls.

General Copper Saga through Super Android 22 Saga:
years later, she support her family and friends against other threats such as the Androids creatd by General Copper.