What are some interesting plot ideas for a greninja story fanfiction?

Well, a plot could involve Yoshi getting lost in a strange new world and Greninja being the only one who can guide him back home. Along the way, they face various challenges that test their friendship. For example, they might encounter a powerful storm that Greninja has to use its ninja skills to shelter Yoshi from. And as they journey, they learn more about each other's cultures and become great friends.

One idea could be that Ash and Greninja's fusion has to battle an ancient evil that threatens the Pokémon world. The fusion might have unique powers that are a combination of Ash's strategic thinking and Greninja's combat skills.

One idea could be that Greninja returns with a new power that it gained during its time away. It could use this power to help Ash in a crucial battle in the Alola region. For example, it might have learned to control water in a more unique way, like creating ice sculptures that can attack opponents.

One plot idea could be that the female Greninja has unique powers that only Ash can help her control. As they train together, they develop a deep bond that goes beyond a typical trainer - Pokémon relationship.

One interesting Ash Greninja fanfiction could be about Ash and Greninja going on a special adventure in a mysterious new region. They might encounter rare Pokémon and have to overcome unique challenges together.

A really interesting fanfiction plot could be about a group of scientists who were working on a project to reverse - engineer the demon technology. They think they can use it to create a weapon against the demons. However, things go wrong and they accidentally open a new portal to a different demon dimension, which brings in even more powerful and unknown demons. The story could then focus on how they deal with this new threat and try to close the portal.

In a modern - day cinderella story fanfiction, Cinderella could be a struggling artist. The prince is a wealthy art collector. They meet at an art exhibition instead of a ball. Cinderella's art catches the prince's eye, and he is determined to find the artist behind it, leading to their love story.

Perhaps a plot where the magic that exists in the Clannad world is more fully understood and harnessed by the characters. This could lead to new ways of solving the problems they face, such as Nagisa's health issues. Also, a story about the characters in a post - Clannad world, how they are building their new lives and families.

One idea could be exploring the Marauders' time at Hogwarts in more detail. For example, showing how they formed their friendship and the pranks they played on Snape that weren't in the original books. Another plot could be a time - travel fanfiction where a character from the future goes back to the Marauders' era and tries to change certain events. Or perhaps a fanfiction where the Marauders have to deal with a new dark threat at Hogwarts that no one else is aware of.

One idea could be a story about an ordinary villager in Maple World who discovers a hidden power within themselves. Maybe they find an ancient artifact that gives them the ability to communicate with monsters and they use this power to broker peace between the villagers and the monster tribes.