Perhaps the fanfic could explore a plot where Roland and Evan are transported to an alternate dimension. In this new world, they have to rely solely on each other to find their way back home. During their time there, they learn more about each other's pasts and secrets. This could lead to a deeper emotional connection between them, and when they finally return to their own kingdom, they are better equipped to face any future challenges.
One possible plotline could be Roland and Evan going on a journey together to save their kingdom from a mysterious dark force. Along the way, they face various challenges that test their friendship and loyalty. Another plotline might involve a misunderstanding between them that leads to a brief rift, but they eventually reconcile and become stronger as a result.
Their relationship can be developed through shared experiences. For example, if they fight side by side in battles, they'll start to trust each other more. Each victory and defeat will bring them closer.
One possible plotline could be a story of conflict and reconciliation. Giratina, often seen as the 'evil' or 'banished' Pokémon, might have some sort of misunderstanding or old grudge against Arceus, the creator. The fanfic could explore how they gradually come to understand each other's perspectives. Maybe there's a threat to the Pokémon world that only they can face together, forcing them to put aside their differences.
It could also be a fanfic that takes place in an alternate universe. In this universe, the events of 4x23 didn't happen as they did in the show. Maybe Beckett didn't become a detective in the same way, and Castle meets her in a completely different situation. They then start to solve mysteries together in this new setting.
One possible plotline could be that the trainer is on a quest to find and capture Raikouf. Along the way, they face numerous obstacles like other powerful Pokémon or rival trainers. Another plot could be that the trainer already has Raikouf and they are training it to become the strongest in a certain competition, like a Pokémon league.
Perhaps in a fanfic, Pirika and Hao are both involved in a mystery. As they work together to solve it, they start to develop feelings for each other. They might discover secrets about each other along the way that either bring them closer or create some temporary rifts in their relationship.
A possible plotline could be that Naruto is transported to Maleficent's world. He might initially be seen as a threat but then prove himself to be an ally. Together, they could fight against the dark forces in Maleficent's world that are trying to take over the entire realm.
One possible plotline could be that Ariel and the urchin are from different worlds and they have to overcome various obstacles to be together. Maybe there are cultural differences between their species that they need to navigate.
Maybe in a 'naruto x cheetah fanfic', the cheetah is a spirit animal that Naruto encounters during a spiritual journey. The cheetah imparts some special wisdom or power to Naruto, which he then uses to face his enemies back in the real world. This could involve Naruto having to master this new power while also dealing with the politics of the ninja villages.
One possible plotline could be a story where Hinata and the Raikage meet during some diplomatic event between Konoha and Kumogakure. They initially have a misunderstanding but gradually start to understand and respect each other, leading to a romantic relationship.
One possible plotline could be that Naruto somehow ends up in Quinella's world. He might initially be confused but then use his ninja skills to navigate the new environment. Quinella could be intrigued by him and they form an unlikely alliance against a common enemy in her world.