There are definitely some out there. However, the quality can vary a great deal. Some might focus on their friendship, while others might explore more of a bromance - type relationship. It really depends on what you're looking for in a fanfic.
There are likely some fanfics about Krillin and Android 18 that focus on their relationship in a non - sexual and family - friendly way. You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. Search for stories tagged with 'Krillin' and 'Android 18' to find ones that might interest you.
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.
In goku x krillin yaoi fanfiction, a prevalent theme is the journey of self - discovery for both characters. As they enter into this new kind of relationship, they may have to re - evaluate their own identities and feelings. There could also be themes of secrecy and acceptance, especially given the nature of their relationship which might not be as openly accepted in the Dragon Ball universe. Additionally, themes of sacrifice and loyalty that were present in their friendship could be intensified in a romantic context.
One great Android 18, Krillin and Marron fanfic could be one that focuses on their family outings. For example, it might show Krillin taking Android 18 and Marron to a picnic by the lake. They could have cute interactions like Marron trying to feed the ducks while Android 18 watches protectively and Krillin just enjoys the moment with his family. Another could be a fanfic where they face a new threat in their city and they all work together to overcome it, with Android 18 using her strength, Krillin his martial arts skills, and Marron showing her cleverness in some way.
The dynamic between 17 and Krillin in the fanfic could be a mentor - mentee type of relationship in some aspects. Even though 17 is an android, Krillin has more life experience and knowledge of the martial arts world. He could teach 17 some of the subtleties of martial arts and strategy. Meanwhile, 17 could show Krillin some of the unique capabilities of his android body. This exchange of knowledge and skills would create a strong bond between them as they team up for various adventures.
Well, they could have an amazing adventure. 17 with his android powers and Krillin with his martial arts skills could make a great team. Maybe they'd fight some powerful villains together. They could use their combined strength to protect the Earth. 17 could use his super strength and speed, while Krillin could use his techniques like the Destructo - Disk. It would be really exciting to see how they work together and overcome challenges.
Their relationship could grow deeper as they face the challenges of pregnancy together. Krillin might become more in tune with 18's needs, and 18 could see a new side of Krillin's caring nature.