Perhaps a story where Caulifla and Goku are on a mission together in an unknown planet. They face various challenges and have to rely on each other's strengths. Caulifla might initially be overconfident, but Goku's experience helps her to understand the importance of strategy and teamwork. Along the way, they start to respect each other more deeply.
A plot could involve Caulifla being from a parallel universe where she is the only survivor of her race. Goku meets her during a multiverse tournament and decides to help her. As they train and fight side by side, they develop a deep bond that goes beyond friendship and they explore their new relationship while facing various challenges from other universes.
Maybe in the fanfiction, they discover a new threat to the universe together. Caulifla's determination and Gohan's intelligence would be crucial in figuring out how to defeat this new enemy. They could start off as rivals, not trusting each other at first, but as they face the challenges, they grow to respect and eventually fall in love with each other.
Romance is also a big theme. Writers like to explore the relationship between the two characters, from the initial attraction to the development of deeper feelings. It might include cute moments like Goku being a bit clueless about his feelings and Caulifla being more forward.
One interesting plot idea could be Goku training Caulifla in a new form of Ultra Instinct. This would allow for a deep exploration of their mentor - mentee relationship. Caulifla is already a strong fighter, but with Goku's guidance, she could reach new heights. Another plot could involve them teaming up against a powerful new enemy that neither could defeat alone. They'd have to combine their unique fighting styles and powers to win.
One idea could be that the OC is a time - traveler who accidentally lands in Caulifla's universe. The OC has unique powers that Caulifla is intrigued by, and they start training together. This could lead to a friendship that slowly turns into something more as they face various challenges together in the tough Saiyan - filled world.
One idea could be that Goku and Goku Black are forced to team up against an even greater threat from another universe. They start to understand each other's fighting styles during the battle and gradually develop a grudging respect for one another.
Well, a Goku x Caulifla x Kale fanfiction could potentially be about their adventures together in a new setting. Maybe it could involve them teaming up against a powerful enemy and during that time, their relationships grow and develop in interesting ways. However, 'lemon' usually implies some inappropriate or adult - themed content, which is not something I would encourage. So if we focus on a non - inappropriate version, it could be a story full of friendship and mutual growth.
A more emotional storyline could be that Caulifla gets injured badly in a fight. Goku then takes it upon himself to nurse her back to health. During this time, they have deep conversations about their lives, their love for fighting, and their dreams. This could lead to a new level of respect and friendship between them.
Maybe a fanfiction where Caulifla develops feelings for Goku during their training sessions. However, Goku, being oblivious as he often is, doesn't notice at first. Caulifla tries to prove herself to Goku by constantly challenging stronger opponents. Their relationship could be a mix of friendship and the start of something more, with a lot of action-packed scenes in between.
One idea could be a story where Goku and Turles are forced to team up against a new, even greater threat to the universe. They start off distrusting each other due to their past but gradually learn to work together and respect one another's strength.