In non - official works, there could be a story where Android 18 discovers a hidden power within herself. This power could be related to her android nature but was previously unknown. She then has to learn how to control and use this power. Another storyline might be about her trying to understand human emotions more deeply, perhaps falling in love with someone unexpected and how that changes her perspective on life and her place in the Dragon Ball world.
One interesting storyline could be about Naruto having a different power origin. For example, instead of being the host of the Nine - Tails, he might gain his power from an ancient sage. This could change the whole dynamic of his character development and relationships in the story.
A really interesting fanfic idea could be set in a post - apocalyptic version of the Dragon Ball universe. Android 18 and Krillin have to fight to protect the few remaining survivors. They use their unique skills, with Android 18's android powers and Krillin's martial arts. Their relationship becomes a source of hope for those around them, as they prove that love can still exist even in the harshest of times.
One interesting storyline could be about their family life. Maybe Android 18 and Krillin decide to take a vacation with their daughter, Marron. They could face various challenges during the trip, like dealing with villains who target their family. Another could be a story where Krillin has to rescue Android 18 from an old enemy who has found a new way to control her. This would test their love and Krillin's strength.
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.
Another possible storyline is that Android 21, who is usually seen as a bit of an outcast, finds acceptance in Goku's group. Goku encourages the others to give her a chance. They then go on adventures together, with Android 21 constantly evolving not just in power but also in her understanding of the world around her.
One interesting storyline could be Goku and Android 18 teaming up to fight a new, powerful enemy that neither of them can defeat alone. They have to learn to combine their skills and powers in unique ways.
One interesting storyline could be Android 21's struggle to find her true identity. In fanfiction, she might discover that she has a hidden past or purpose that was not initially known in the original series.
One popular Android game with a great storyline is 'Genshin Impact'. It has a vast and immersive world filled with diverse characters, each having their own backstories. The main story revolves around the Traveler's search for their lost sibling and in the process, uncovers the secrets of Teyvat. Another is 'Stardew Valley' which has a heartwarming story of starting anew in a rural area, building relationships with the villagers, and revitalizing the old farm. Then there's 'The Room' series. These are puzzle games but with an underlying mystery story that unfolds as you solve each room's puzzles, keeping players intrigued throughout.
One great storyline could be them teaming up against a new, powerful enemy that neither can defeat alone. They start off not trusting each other fully as they have different fighting styles. Android 17 is more of a lone wolf type, while Trunks is used to fighting alongside his friends. But as they battle, they learn to work together, with Android 17 teaching Trunks some of his unorthodox combat moves, and Trunks showing 17 the value of friendship and teamwork in a fight.
Another storyline could be a time - travel one. Android 21 somehow gets sent back in time and meets a younger Goku. This would be really interesting as she would have knowledge of future events and technologies. Goku, being his curious self, would be intrigued by her and want to learn from her. They could team up to prevent some of the future disasters that Android 21 knows about.