The fanfic could be set in an alternate universe where Cheelai and Broly are the only survivors of a great catastrophe. They have to rely on each other to survive and in the process, they learn more about their own powers and the secrets of the universe they live in.
Perhaps it's a love story where Cheelai's feelings for Broly develop over time. They might start as friends, but as they go through various challenges, her admiration turns into something deeper. It could also explore how Broly, who is often seen as a wild and powerful being, reacts to Cheelai's more gentle and caring nature.
One common theme is friendship. Since Broly and Cheelai come from different backgrounds, their growing friendship is often explored. Another is self - discovery. Broly, who has a complex past, often discovers more about himself with Cheelai's influence.
One common theme could be the exploration of an unlikely relationship. Since Broly is such a powerful and often misunderstood character and Cheelai has her own personality, their relationship can be a study in contrast. Another theme might be growth, like how they help each other grow as individuals within the context of their relationship.
A great fanfic might explore their relationship in more depth. For example, how Cheelai helps Broly control his power and they form a strong bond. They could face challenges from other characters who are jealous of their friendship.
Another place to find them could be some dedicated Dragon Ball fan forums. Fans often share their own written works there. Just search for Broly and Cheelai related threads and you might discover some great fanfics.
Broly is a Saiyan with an extraordinary power level. In this fanfiction, he is the main male character. His relationship with Cheelai is the focus. Cheelai is likely a strong - willed and caring character. She may be part of the same group or race as Broly or from a different one. Their interactions form the core of the story. She might be the one who tames Broly's wild nature or at least tries to understand him on a deeper level.
One possible fanfiction could be about Cheelai's backstory. Maybe she was once a normal Saiyan on Planet Vegeta but was part of a lower - class family. She had to fight hard from a young age to survive. In the fanfiction, it could explore how her experiences on her home planet shaped her into the tough character we see in 'Dragon Ball Super Broly'.
One possible plot could be that Broly and Cheelai find themselves stranded on an uninhabited planet. As they struggle to survive, they grow closer. Their relationship deepens, and they start to develop feelings for each other. Eventually, they might have to face a common enemy that threatens their newfound bond.
Well, there's 'Cheelai's Perspective' fanfic. In this, the story is told from Cheelai's point of view as she gets to know Broly better. It shows her initial wariness turning into something more like admiration and friendship. Also, 'Broly's Growth with Cheelai' is a fanfic that details how Broly's character develops in the presence of Cheelai.
She could be the key to uniting different Saiyan factions. Cheelai might have unique diplomatic skills that she uses to bring together Saiyans who were scattered after the destruction of Planet Vegeta. This could lead to a new Saiyan - led alliance in the Dragon Ball Super Broly universe.
Since 'lemon' often implies some adult - related themes, I can't really promote or discuss common themes in such fanfiction. But for regular Broly and Cheelai fanfiction, common themes could be their growth as characters, their loyalty to each other, or their place in the Dragon Ball universe.