One idea could be that Cloud and Terra are from different dimensions and accidentally get pulled into each other's worlds. They then have to team up to find a way back to their respective homes while facing various challenges along the way. For example, they might encounter strange monsters that are unique to each other's universes.
One idea could be that Cloud and Leon are from different dimensions. They meet by some strange magic accident. Cloud is on a journey to find his lost memories, and Leon, being a more experienced fighter in his world, helps him understand the true nature of his past. They bond over their shared experiences of fighting powerful foes.
One plot idea could be Raven and Terra teaming up to face a new, powerful enemy that neither could defeat alone. They start off distrusting each other but as they battle, they learn to rely on one another's powers. Another idea is a story set in an alternate universe where Raven and Terra are from different factions but fall in love, causing them to question their loyalties. A third could be that Terra has lost her memory and Raven is the only one who can help her regain it, leading to a deep emotional bond between them.
One plot idea could be that Lightning and Cloud are from different worlds that are on the verge of colliding. They have to team up to find a way to stop the cataclysm. Along the way, they discover they have more in common than they thought and develop a deep bond.
One plot idea could be that Vincent and Cloud are on a quest to find a lost ancient relic. Along the way, they face various challenges and have to rely on each other's skills. Vincent's dark past and Cloud's internal struggles add depth to their journey.
For a Final Fantasy Cloud x Terra fanfic to be great, it needs to have strong emotional connections. Maybe Terra helps Cloud come to terms with his past, or Cloud gives Terra the strength to face her inner demons. The writing style also matters. A vivid and engaging style can make the story really come alive. It should also be true to the Final Fantasy universe in terms of the setting and the lore. For example, references to magic and different worlds in a way that makes sense within the context of the games.
Maybe a new original villain could be created for the fanfic. This villain could be a powerful mage who has the ability to manipulate time. He wants to use Cloud and Terra's powers for his own evil purposes. He tries to turn them against each other by showing them false visions of the future where they are enemies.
A really interesting plot could be that there is a strange phenomenon in the world that is making the Shinra Company rise again in a new and more dangerous form. Cloud and Yuffie team up with some old allies and new friends to stop this threat. They have to infiltrate the new Shinra bases, fight new types of soldiers, and discover the secrets behind this resurrection. This would involve a lot of action, as well as some emotional moments as they deal with the memories of their past battles against Shinra.
Well, a plot could start with Terra feeling self - conscious in the changing room about her powers and how they might affect her appearance. Beast Boy enters (not on purpose) and tries to comfort her. He shares his own insecurities about being different. They could then start to bond more deeply over this shared experience. Maybe later, they find a mysterious object in the changing room that has some connection to their pasts and they embark on an adventure to figure out what it is. This could lead to them growing closer and realizing their feelings for each other.
One great Cloud x Terra fanfiction is 'The Meeting of Two Worlds'. It beautifully weaves their two storylines together, exploring how their different personalities interact. Another is 'A Shared Destiny' which delves into their adventures side by side in a new, fictional realm created by the author. And 'Cloud and Terra: Bonds Beyond Time' shows an interesting take on how they could form a strong bond in a post - apocalyptic setting.
One popular Terra X Cloud fanfiction might be the one where they go on an adventure together to save their world from a mysterious dark force. It has great character development and action scenes.