It's interesting because it can delve into the emotional sides of both characters. Android 18, who has been through a lot, might find solace and a new purpose in her love for Gohan. Gohan, on the other hand, could be inspired by Android 18's strength and tenacity. This fanfic has the potential to show how their relationship could change the course of their lives and the Dragon Ball world as a whole. It might also explore how they deal with the challenges that come with their relationship, such as dealing with their friends' and family's reactions.
The fact that they both have martial arts backgrounds is also a plus. Fanfics can explore how they train together, compete, or even develop new fighting techniques as a couple. It adds an action - packed element to their relationship.
One possible storyline could be them teaming up for a tournament. Gohan's martial arts skills combined with 18's strength would make for an interesting duo in the fighting arena. They could face various opponents and learn to trust each other's abilities more.
A possible plot is that Android 21, who has some glitches in her system related to her emotions, is healed by Gohan's kindness. As a result, she starts to develop feelings for him. They then have to deal with the fact that their relationship is not accepted by some in the Z - Fighter community because of Android 21's origin. This leads to a story full of drama and self - discovery for both of them.
Maybe in the fanfiction, Android 18 gets injured while protecting Gohan from a new powerful enemy. Gohan then takes care of her and in that time of vulnerability, they realize their feelings for each other. This could lead to them exploring a relationship while also trying to figure out how to defeat the enemy that still lurks.