In this fanfiction, perhaps Bell Cranel is neglected by Hestia when it comes to getting proper equipment or resources. Hestia might be allocating the familia's funds to other areas, thinking they are more important. So Bell has to take on low - paying quests just to earn enough to buy basic gear. This could lead to him facing more dangerous situations than he should, and also cause a rift between him and Hestia as he feels she doesn't value his safety and growth.
It could be another god who sees Bell's potential and wants to use his situation of being neglected by Hestia to their advantage. This god might try to lure Bell away from Hestia's familia by offering false promises of better treatment and more opportunities.
Well, a plot might involve Bell getting injured in a dungeon and Hestia having to use all her powers to heal him. During this time, they have deep conversations and realize new things about each other. Or perhaps there's a story where Bell has to compete in a special tournament, and Hestia is his only supporter. They train together and their relationship takes on a new dimension. Also, a plot could be that a mysterious force tries to separate them and they have to fight against all odds to stay together.
Maybe in the fanfiction, Bell gets injured during a battle and Chloe takes it upon herself to nurse him back to health. During this time, they have deep conversations about their dreams and fears. Chloe reveals her insecurities about not being as strong as she wants to be, and Bell encourages her, which leads to a new level of friendship between them.
One possible plot could be that Bell Cranel's pride makes him reject advice from his comrades. He then embarks on a solo adventure where he realizes his pride has put him in a dangerous situation that he can't handle alone. This could be a turning point for his character growth.
It could be a character from a rival group. They see Bell Cranel as a threat to their plans and so they betray him by setting him up in a dangerous situation.
Their relationship can be developed through shared experiences. For example, if they go through a dangerous dungeon together, Bell can protect Hestia and she can in turn use her divine powers to support him. This mutual reliance will strengthen their bond.
In such a fanfiction, Bell might lose his trust in Hestia. Maybe Hestia could break a promise she made to Bell, like not coming to his aid when he's in a crucial battle. This would leave Bell feeling abandoned and betrayed, and it could lead to a rift in their relationship.
Love is also a common theme. There are many fanfictions that explore Bell's romantic relationships, whether it's with Ais or other characters. Adventure is another prevalent theme. Bell is known for his adventures in the original story, and fanfictions often take him on new and exciting adventures, sometimes to unexplored parts of the world.
Often, female Bell Cranel in fanfiction is portrayed as more intuitive. For example, in some works, she can sense danger in the dungeon more acutely than her male counterpart. This is because she is written to be more in tune with her instincts.
One possible storyline could be about the challenges they face as new parents. Bell, being an adventurer, might have to balance his time between his family and his dungeon - exploring duties. Hestia, on the other hand, would be fully immersed in taking care of the child and guiding Bell on how to be a good father. The child could also inherit some unique abilities from Bell and Hestia, which could lead to interesting plot developments in the future.