Perhaps a plot where Mineta enters a parallel dimension where the rules of his quirk are different. He has to adapt quickly to survive and find a way back home. This could lead to some interesting character development as he faces new challenges and has to rely on himself more. He might also make new friends or enemies in this parallel dimension.
One idea could be that a kaiju suddenly appears in the My Hero Academia world and the heroes have to figure out a new way to combat it since their usual powers might not be as effective. For example, they might have to work together in a more strategic way than ever before, combining different quirks to create a new type of attack.
Mineta could be developed by having him learn new skills related to his quirk. This not only makes him more powerful but also gives him more confidence. He could also develop relationships with other characters on a deeper level. For example, having a heart - to - heart conversation with Midoriya about their insecurities. This would make him more relatable and show that he is capable of having meaningful connections, which in turn develops his character.
Some fanfictions have the theme of Mineta finding his place in the hero world. He is often underestimated, and these stories explore how he can break free from that perception. They might also include themes of loyalty, as he stands by his friends in difficult situations within the My Hero Academia setting.
The 'Plant Symbiosis' quirk would be a great addition to a fanfiction. The individual with this quirk can form a symbiotic relationship with plants. They can communicate with plants, make them grow rapidly, and even use plants as an extension of their body for things like creating shields or lashing out at enemies. This quirk could bring a whole new element of nature to the story.
One plot idea could be Kendo Itsuka going on a special training mission in a mysterious location. Along the way, she discovers new powers within herself and has to overcome various challenges. Another idea is a story where she teams up with an unlikely ally to solve a mystery in the hero world.
There's a fanfiction called 'Mineta's Hidden Potential'. In this story, Mineta discovers a new quirk within himself that he has to learn to control. It's an exciting read as it explores his journey of self - discovery and how it impacts his relationships with other characters in the My Hero Academia world.
One idea could be a story where the characters are transported to a parallel fantasy world where their quirks work differently. For example, Midoriya's One for All might give him the ability to communicate with magical creatures instead of just enhancing his strength. Another could be a pre - quirk era story in a fantasy setting, where they have to rely on magic and swordsmanship like traditional fantasy heroes. A third idea might be a time - travel plot where they go back to a crucial point in the history of heroics in a fantasy version of their world and have to make sure things happen correctly to preserve the future.
One plot idea could be a villain who is secretly a double agent, working for the heroes all along. They infiltrate the villain group and gather information. Another idea is a hero who loses their quirk and has to rely on their wits and combat skills alone, like Batman in the DC universe. And a villain - hero team - up to face a greater threat that neither can handle alone.
An interesting plot could involve an anti - hero who has a hidden agenda that is not entirely evil but also not in line with the traditional hero goals. Maybe they are trying to expose a corrupt part of the hero society from within. They could form alliances with some villains who also have a vendetta against the corrupt elements. This would create a complex web of relationships and moral dilemmas.
A great plot could involve Tsu going on a training journey outside of UA. She discovers a new aspect of her quirk during this journey. Like she finds out she can communicate with a certain type of animal that she previously couldn't. This new discovery then becomes crucial in a battle against a group of villains who are causing trouble in the area she's training in. She uses her newfound ability to gather intel and then defeat the villains.