One interesting storyline could be exploring the backstories of the League of Villains members in more depth. For example, delving into how Tomura Shigaraki became the way he is. Maybe he had a tragic past that led him to embrace villainy. Another could be a story where the League of Villains teams up with an unexpected group for a common goal, like a group of anti - hero vigilantes. It would create a lot of moral and ethical dilemmas for both sides.
A great storyline might involve the League of Villains trying to reform. What if they realized that their actions were causing more harm than good? They could struggle with changing their ways while still facing opposition from both heroes and other villains. Or perhaps a story where a new member joins the League of Villains and causes a rift within the group. This new member could have different motives and methods, leading to internal conflict.
Tomura Shigaraki is a very popular character to write about. His complex personality and his connection to All For One make him an interesting subject. His journey from a seemingly lost and angry young man to a powerful villain leader has a lot of potential for exploration. Dabi is also quite popular. His mysterious past and his relationship with the Todoroki family add depth to his character. Writers can play with the idea of his motives and what he really wants out of his villainous actions.
Well, in a My Hero Academia meets FNAF fanfiction, a really cool concept could be the quirks interacting with the FNAF lore. Like Todoroki's ice and fire quirk could be used to either freeze or burn the animatronics. And the animatronics' strange behavior could be seen as a new type of 'quirk' in the My Hero Academia universe, leading to some really unique battle scenarios.
One interesting storyline could be Tim Drake's struggle with the moral code of the League of Assassins. He's a hero at heart, so being in an organization that kills might force him to reevaluate his beliefs. Another could be his relationships within the League. Does he make friends or enemies? And finally, there could be a storyline where he tries to reform the League from within, using his wits and skills.
There might be a new character who is a tech - genius and uses advanced gadgets to fight crime. They don't have a traditional quirk but instead rely on their intelligence and engineering skills. This would be a fresh take on the types of characters in the story. Also, a character who has the ability to communicate with animals and enlist their help in battles could be really interesting.
In some fanfictions, there might be a storyline focused on the origin of the 'Flame On' concept. It could be tied to an ancient civilization within the 'My Hero Academia' world. A group of young heroes stumbles upon this secret and has to protect it from villains who want to use it for their own evil purposes. They learn about the true power of the flame - on quirk and how it can change the balance of power in their world.
One popular storyline could be about a character receiving a mysterious gift that unlocks a new quirk or power. For example, Midoriya might get a gift from an unknown source that gives him the ability to control time for a short period, adding a whole new dynamic to his battles and character development.
One possible storyline could be the characters from My Hero Academia celebrating Christmas together at UA High. They could exchange gifts, with Deku getting a special All Might-themed item from his friends. Another idea is that the villains, for a change, have a truce during Christmas and experience the holiday spirit in their own way. Maybe Shigaraki gets a small moment of peace and reflects on his life.
One popular storyline is the 'What if' scenarios. For example, what if the main character had a different quirk? Another is the character development outside the canon story, like exploring Bakugo's past more deeply. And there are also storylines where minor characters get more spotlight and their own heroic arcs.
A darker plot idea could involve a powerful villain who has somehow found a way to corrupt both universes. This villain uses the technology and powers from both My Hero Academia and the Justice League's worlds to create a doomsday scenario. The heroes must put aside their differences and combine their strengths to stop this new threat. This would involve a lot of character development as they learn from each other's methods of heroism and sacrifice.
One great storyline in My Hero Academia god fanfiction could be a god - like villain. This villain could have powers that seem almost unbeatable, like the ability to rewrite reality. It would create a huge challenge for the heroes, forcing them to think outside the box and work together in new ways. Maybe they'd have to find a way to nullify the villain's god - like powers.