One idea could be a story where the Crystal Bearers have to team up with Naruto and his friends to stop a new, powerful enemy that is after the crystal powers. This enemy could be from a far - off land and have unique abilities that force the two groups to combine their skills.
Perhaps a fanfiction where a young Crystal Bearer discovers they have a connection to Naruto's chakra. They embark on a journey to find Naruto and learn more about this strange link. Along the way, they face many challenges and also learn about the true nature of their crystal - bearing abilities.
Sasuke can also be a popular character in Naruto Crystal Bearers fanfiction. His brooding nature and powerful ninja skills can add an interesting dynamic. He might be a rival to some of the Crystal Bearers at first, but then they could end up working together against a common foe. Writers can explore his potential reactions to the crystal powers and how he might incorporate them into his own fighting style if possible.
In the fanfiction, the crystal release bloodline could be linked to a hidden realm made entirely of crystals. The main character, who has this bloodline, discovers a way to enter this realm and finds out that there are powerful crystal beasts there. They have to form an alliance with some of these beasts to gain enough power to defeat an evil force that is threatening the ninja world.
Well, one idea could be the fusion of Naruto's ninja skills with crystal dragon slaying magic. Maybe Naruto discovers a hidden power within him that allows him to summon crystal dragons and use their powers in battles against powerful foes in the Naruto universe.
One idea could be exploring an alternate timeline where the main character makes different choices in the game. For example, choosing a different starter Pokemon and how that changes their entire journey through the Johto region.
One idea could be Ash and Crystal teaming up to explore a new, mysterious region filled with rare Pokemon. They could encounter a powerful and previously unknown Legendary Pokemon that they have to work together to understand and protect.
One idea could be a story about a trainer who discovers a rare and powerful Pokemon in the Johto region that is not typically found in the games. For example, a shiny, alpha form of a Pokemon like Totodile. The trainer then has to protect this Pokemon from a mysterious organization that wants to use it for evil purposes.
A cool plot for a Crystal Story 2 fanfic could be a story centered around a magical item that has been lost in the game world. The main character hears rumors about it and sets out on a quest to find it. Along the way, they face challenges from other characters who also want the item for their own reasons. It could also be interesting to write a fanfic about a character who gets cursed and has to find a way to break the curse while still dealing with the normal threats in the game world. Or perhaps a fanfic where two characters from different factions fall in love and have to overcome the differences between their groups.
You could write a 'the dark crystal fanfiction' about a Skeksis who has a change of heart. Perhaps this Skeksis realizes the error of their ways after seeing the destruction they've caused. They then try to secretly help the Gelflings, all while hiding their new - found compassion from the other Skeksis. This would add an interesting layer of drama and conflict to the story.
One idea could be exploring the backstory of a minor Gelfling character. Maybe they have a secret connection to the Skeksis that they're trying to hide. Another could be a story about Gelflings from different clans coming together to form an even stronger resistance before the events of the show. And a third could be a fanfiction where a Gelfling discovers a new power within themselves that could potentially turn the tide against the Skeksis.
One idea could be a story where the protagonist's Pokemon from Pokemon Gold teams up with a Pokemon from Pokemon Crystal to face a new, powerful and mysterious threat that neither region has seen before. For example, a dark force that is causing natural disasters in both Johto and the Crystal region.