A possible storyline is the characters forming a high school club related to martial arts or self - defense. They could teach other students and at the same time learn more about human relationships and teamwork. This would be a great way to see how they adapt to normal high school life while still having their unique powers and abilities.
A third storyline could be about the high school students discovering the Dragon Balls. They might start off thinking they're just some cool artifacts, not realizing their true power. As they start to figure it out, they could get into all sorts of adventures, with the Z - fighters having to step in to protect them from those who would misuse the Dragon Balls.
One interesting storyline could be about a new student at Dragon Ball High School who has a hidden power. They struggle to fit in at first but then end up using their power to save the school from a mysterious threat.
One interesting storyline could be about a new Saiyan character in the Dragon Ball Z RPG fanfiction. This character might have a unique power that no one has seen before. They could start as an outcast among the Saiyans but then prove their worth during a big battle against a powerful new enemy.
One interesting plot could be Gohan trying to balance his Saiyan powers with high school life. For example, he might accidentally use his super strength during gym class and have to cover it up.
One interesting story could be the ones where the characters from Dragon Ball Z end up in the High School DxD universe and have to adapt to its rules. For example, Goku trying to understand the whole devil - angel - human dynamic in the High School DxD world would be quite fascinating.
One interesting storyline could be Goten and Marron teaming up for a martial arts tournament. They could face various challenges together, like tough opponents and strange tournament rules. This would show their growth as fighters and also their friendship.
One interesting storyline could be a female Saiyan from a different planet arriving on Earth and having to learn about Earth's customs while also dealing with her own Saiyan instincts. She might struggle to fit in with the Z - fighters at first.
One possible storyline could be Trunks and Videl teaming up for a martial arts tournament. They could combine their unique fighting styles and strategies to face powerful opponents. Trunks' Saiyan power and Videl's skills learned from Gohan would make them a formidable duo.
One interesting storyline could be a female Frieza race character trying to redeem her race's bad reputation. She could go on a journey to help planets in need, much like Goku and his friends do. Another could be her getting involved in a power struggle within the Frieza race, where she has to use her wits and new - found powers to survive.
One interesting storyline could be Gohan's struggle to control his wolf - like instincts while still being a Saiyan. Maybe he has new powers related to his wolf form that he has to learn to master. Another could be him facing off against enemies who are both intrigued and threatened by his unique form.