It could be that Mineta's grades are so abysmally low due to his lack of focus on academics, always being distracted by his, well, less than noble interests. The school has a strict academic policy and, despite some attempts at remediation, he fails to meet the requirements and is thus expelled.
Well, one possibility could be that Mineta's inappropriate behavior finally catches up to him. Maybe he makes one too many lewd comments or actions towards his female classmates, and the school decides it's enough. So he gets expelled.
Definitely the teachers. They would play a crucial role in the expulsion process. For example, Aizawa might be the one who has to enforce the decision. He's always been strict about behavior and academics in the classroom.
One possible storyline could be that Mineta's inappropriate behavior finally catches up to him. Maybe he makes one too many lewd comments or actions towards his female classmates, and the school decides enough is enough. His expulsion then leads to him realizing the error of his ways and trying to redeem himself outside of U.A. High.
One possible reason could be getting into too many fights. If Trunks is constantly using his Saiyan strength to defend himself or others in a violent way, the school might expel him. Another reason could be skipping classes. Maybe he's off on some adventure or training instead of attending school.
One possible plot could be that the house is a sentient being in a magical world. A dark sorcerer wants to take over the land where the house stands. When the house tries to protect itself, the sorcerer shoots magic bolts at it. The inhabitants of the house, who are fairies, then have to find a way to heal the house and drive the sorcerer away.
Maybe Femnaruto has been arranged to marry someone for political reasons. At first, she is reluctant but as she gets to know her future partner, she discovers that they have a lot in common. They work together to improve relations between their two clans or villages. Along the way, they fall in love and the marriage becomes a symbol of unity and love, not just a political tool.
One possible plot could be that Bella is in a difficult situation in her life, perhaps she is not ready to be a mother due to various reasons like her age, career prospects, or relationship instability. The story might then focus on her emotional turmoil as she makes the decision to have an abortion, dealing with the judgment from society or her family.
Well, perhaps she gets the power of invisibility. At first, she uses it for fun, like sneaking into places she couldn't before. But then she realizes that there's a villain who is also invisible and she has to use her new power to track him down. This could lead to a whole new set of adventures where she has to rely on more than just her physical combat abilities. She might have to use her wits in a different way to outsmart an enemy she can't see.
One possible plot could be that Ichigo discovers too many secrets within his group of friends or allies. These secrets might start to weigh him down and make him feel isolated as he can't fully trust anyone. Maybe he starts to question his relationships because of all the hidden information.
In the fanfiction, it might be that Tsunade believes Naruto has become too dangerous. Maybe she's misled by false information about Naruto's new powers being uncontrollable and a threat to the village. So she decides to betray him to protect Konoha from a potential disaster.
Well, one possibility could be that Naruto discovers that his friends have been secretly working against him in some way, like lying about their intentions or using him for their own gains. Maybe they've been making deals behind his back that go against what he believes in.