Perhaps in the fanfiction's alternate universe, Chi - Chi gets involved in a time - travel accident that goes wrong and it results in her death. This could lead to all sorts of changes in the timeline and how the other characters react to her unexpected death.
Another possibility is that in the fanfiction, there could be a deadly disease or curse that spreads across Earth and Chi - Chi succumbs to it. This would add a different kind of drama compared to the usual battles in Dragon Ball Z.
One reason could be a new, extremely powerful villain who targets Earth and Chi - Chi unfortunately gets in the way. Maybe this villain has a vendetta against Goku and decides to hurt him by killing his wife.
There are various fanfictions that might explore Chi - Chi's death in Dragon Ball Z. Some might do it to explore how Goku and the other characters would react. In a sense, it could be a very dark and emotional take on the story, showing the grief and possible revenge motives of the characters left behind.
Maybe in a fanfiction where Chi - Chi is mind - controlled by an extremely powerful villain. The villain could manipulate her into doing such a horrible thing against her will.
I haven't come across such a fanfiction myself. It goes against the general nature of their relationship in the original series. Chi - Chi loves Gohan deeply and is very protective of him.
Yes, there are. Some fanfictions might depict Chi - Chi teaching Gohan important life lessons, like how to balance his human and Saiyan sides. It could also show Gohan looking up to Chi - Chi for her strength and wisdom. They might be involved in heart - warming family moments, such as celebrating holidays or dealing with the challenges that come with being part of the Z - Fighter family.
One popular theme is Gohan's growth under Chi - Chi's influence. Chi - Chi has always been strict about Gohan's education, and fanfictions might explore how this affects Gohan's development as a person and a warrior. Another theme could be family unity. Since they are an important part of the Saiyan family in 'Dragon Ball Z', fanfictions could show how they support each other during tough times.
Well, perhaps Chi - Chi meets Goku at a new tournament. Goku is excited to see her, but Chi - Chi is a bit miffed that he didn't tell her he was participating. They then have a heart - to - heart talk about his love for fighting and her desire for a more stable family life. It could be a really emotional encounter with lots of reminiscing about their past and hopes for the future.
One plot idea could be that Chi - Chi discovers a new power within her armor during a battle in Xenoverse. This new power could help her protect her family or the Earth in a unique way.
Family is a common theme. Since they have a family in the Dragon Ball series, fanfictions often explore how they raise their kids. Another theme is love, of course, showing the depth of their relationship.
One reason could be his pursuit of stronger opponents. Goku is always eager to test his strength and find new challenges. In fanfiction, this might lead him to leave Chi - Chi to travel the universe in search of the toughest foes. He might feel that staying at home with his family restricts his growth as a fighter.
One unique aspect is the exploration of female relationships in the Dragon Ball world. Since most of the focus in the original is on the male fighters, fanfictions about Chi - Chi and Maron give a different perspective. For example, they can show how the two deal with the male - dominated environment.