Trunks could be another character. Given his experience with time - travel in the original story, he would have a natural connection with the Supreme Kai of Time. He could be involved in helping her to fix any disruptions in the timeline that he may have knowledge about or be a part of. His future - savvy perspective could be valuable in the fanfiction's plot, especially when dealing with potential threats to the future that are related to the time - space continuum.
The story of Dragon Ball Z Kai follows Goku and his friends as they defend the Earth from various powerful threats. It includes battles against villains like Frieza, Cell, and Majin Buu. Goku, a Saiyan, constantly trains to become stronger and uses his martial arts skills and special abilities like the Kamehameha wave.
Well, in such fanfiction, a really cool concept might be time - travel adventures that involve the Supreme Kai of Time. For example, she could take characters from different eras in Dragon Ball Z to fix certain events in the timeline. This would not only add an exciting element of adventure but also allow for some really interesting character interactions between different generations of characters.
The main characters are Goku, a Saiyan who is the hero of the story. Vegeta, another Saiyan who starts as an enemy but later becomes an ally. Gohan, Goku's son. Piccolo, a Namekian. Krillin, Goku's best friend. And Bulma, who is important for inventing things that help the characters in their battles.
One interesting Dragon Ball Z Kai fan fic could be one that focuses on an alternate timeline where Goku never hit his head as a baby. This would change his personality and the entire course of the story. Another could be a story centered around Vegeta's training in a new, uncharted planet, exploring his growth without the constant presence of Goku. There are also fan fics that might explore the backstories of minor characters like Yamcha or Krillin in more depth, which can be really fascinating.
One option could be to search on popular online shopping platforms specifically targeted at Indonesian customers. Another possibility is to check with local libraries that have a collection of manga. You could also ask at comic conventions or events related to anime and manga in Indonesia.
There are fanfictions that focus on their family life. For example, a story might explore how Vegeta adjusts to being a father while still maintaining his Saiyan warrior pride. He might struggle with balancing training and spending time with his family, but Bulma is always there to keep him in check.
Vegeta could also work well. Vegeta's pride and determination, along with his powerful fighting skills, would contrast nicely with the Supreme Kai's more reserved and wise nature. They could learn from each other and have some intense rivalries within the story.