What are some interesting plot ideas for kamen rider phantom fanfiction?

Another plot could involve Kamen Rider Gaim getting trapped in a time loop. He has to relive the same day over and over again, each time trying to figure out how to break the loop while also dealing with the day - to - day threats he usually faces. In the process, he discovers new things about his powers and the true nature of the threats in his world.

Another plot could involve Cronus teaming up with a former enemy to face a greater threat. This would force him to re - evaluate his relationships and motives. For example, he might have to work with a Kamen Rider he once tried to destroy. It could lead to some great character development for him.

One interesting plot idea could be Chalice crossing over with another Kamen Rider series, like Kamen Rider Decade. They could team up to fight a common enemy that has the ability to travel across different Rider worlds. Maybe this enemy is stealing the powers of various Riders, and Chalice and Decade have to figure out how to stop it while also learning about each other's abilities and fighting styles.

One idea could be exploring the backstory of Dark Decade more in - depth. Maybe there was a tragic event in his past that led him to his current path. Another could be a crossover with other Kamen Rider series, where he teams up with a Rider from a different timeline.

A really cool plot could involve Kamen Rider Mach crossing over with a time - traveling hero. They have to go back in time to stop an evil organization from changing history in a way that would be disastrous for the future. There could be lots of cool chase scenes and battles in different historical eras.

A crossover with Kamen Rider Zi - O could also be really cool. Zi - O travels through time, so he could accidentally disrupt the timeline in a way that affects Ghost's world. Ghost might have to team up with Zi - O to fix the timeline while also dealing with the enemies that are taking advantage of the time - chaos. They could encounter different versions of themselves from alternate timelines and have to figure out how to make things right.

In a Kamen Rider Decade Crossover Fanfiction, Decade could end up in a world where the Kamen Riders are all children. He has to protect them from an evil force that wants to use their power before they fully understand it. This would involve him teaching them how to use their Rider powers in a more creative and simple way. He could also cross over with a classic monster movie world, like Godzilla's world. Decade and the Kamen Riders have to work together with the monsters to stop an even greater threat.

One idea could be a crossover with another Kamen Rider series like Kamen Rider W. The two Riders could team up to fight a new, powerful villain that is causing chaos across both of their worlds. They would combine their unique abilities and gadgets to take on the enemy.

One interesting story could be about Danny Phantom getting the powers of a Kamen Rider and using them to fight supernatural threats in both his world and the Kamen Rider world. He might team up with a Kamen Rider to take on a powerful ghost - demon hybrid villain.

One idea could be creating an OC (Original Character) who is a time - traveling kamen rider. They could go back in time to prevent certain disasters in the kamen rider universe. Another idea is an OC that has a unique transformation device, like a kamen rider who transforms using music notes. For example, their henshin (transformation) sequence could be accompanied by a symphony.