One popular type might be those that explore Majin Gohan's new powers and how he uses them in different battles. For example, fanfictions could show him facing off against new villains that the original series didn't cover. Another aspect could be his relationships with other characters like Videl or his father Goku. Some fanfictions might focus on how his transformation into Majin Gohan affects his daily life and his interactions with the people around him.
Maybe in the fanfic, Majin Boo has done something extremely unforgivable to Bulma, like harming her family or friends. This could be the reason for her inability to forgive.
I'm sorry, I haven't read a specific 'bulma wintt forgive majin boo fanfic' so I can't recommend one directly. You could try searching on fanfic websites like FanFiction.net or Archive of Our Own.
One possible plot could be that Majin Boo has done something really bad that affects Bulma. But then, through a series of events, like Majin Boo saving Bulma's life or showing remorse in a very genuine way, Bulma begins to consider forgiveness. Maybe Majin Boo has to sacrifice something important to prove his change of heart, and in the end, Bulma fully forgives him.
It could also be due to the general nature of Majin Boo. He was initially a villain created for evil purposes. His appearance and the way he carried out his actions were often grotesque and malevolent. Bulma, who is used to a more civilized and scientific environment, might be repulsed by his very existence and find it unforgivable that he was able to cause so much trouble in their world.
Bulma's inability to forgive could also drive her to take actions on her own. Maybe she tries to find ways to keep Majin Boo at bay or even eliminate him, which could lead to new adventures and challenges. It could also lead to her developing new powers or technologies in order to deal with the threat she perceives from Majin Boo, which would significantly impact the storyline.
It could be that Majin Boo attacked the city where Bulma lives. Her home and the people she cares about are in danger because of him, and that's why she can't forgive him.
In a fanfiction, their relationship development could be quite complex. Female Majin Buu's more carefree and unpredictable nature could initially clash with Gohan's more disciplined self. However, as they face various challenges together, such as a powerful enemy attacking the planet. They start to understand each other better. Gohan begins to appreciate Female Majin Buu's unique perspective and abilities, and she respects his intelligence and strength. This mutual understanding paves the way for a closer relationship, whether it's a strong friendship or a romantic relationship depending on the direction of the story.
A possible plot is that Female Majin Buu, who has a different view of the world compared to Gohan, tries to show Gohan how to have more fun and be less serious all the time. This could lead to some comical situations as Gohan is used to being more reserved. Or perhaps there is a situation where an evil force tries to turn Female Majin Buu against Gohan, but their friendship overcomes the mind - control attempts.
First, you should familiarize yourself with the character of Majin Gohan. Watch the relevant episodes or read the manga parts where he appears as Majin Gohan. Then, think of an interesting concept. It could be something like a new threat that only he can face because of his unique form. Next, start with a basic plot outline, like how the story will begin, what the main conflict is, and how it will end.