A cool plot could be that the male Dragonborn is sent back in time and meets a younger Alduin. They both have to learn from each other in order to change the course of history and prevent some great disaster from befalling Skyrim. It would be a story about growth and redemption for both characters.
One interesting aspect could be the exploration of the relationship between Alduin and the Dragonborn. It might delve into their power dynamics, like how the Dragonborn's abilities are pitted against Alduin's might. This could include epic battles and the strategic thinking involved in their confrontations.
One idea could be that the female Dragonborn initially sees Alduin as a great threat. But as she delves deeper into the lore and her own powers, she discovers a connection to him that was long forgotten. Maybe they have to team up against an even greater evil that is emerging in the world of Skyrim.
Perhaps their love could be a means of bringing peace. The Dragonborn, with her connection to mortals, and Alduin, with his influence over the dragons. In fanfiction, they might work together to bridge the gap between humans and dragons. Their love story could be set against the backdrop of a world on the verge of chaos, and their union could be the key to saving it. They could face many obstacles, like the distrust of both humans and dragons, but their love perseveres.
A common theme is the power struggle. Since both Alduin and the Dragonborn possess great power, their relationship often involves jostling for dominance or trying to understand each other's power. Another theme is redemption. Alduin, being a somewhat villainous character, often has a story arc of redemption in these fanfictions. For example, the Dragonborn may be the catalyst for Alduin to change his ways.
One plot idea could be that Danny and Ember have to team up to defeat a new, powerful ghost that is causing chaos in both the human world and the Ghost Zone. Along the way, they learn to understand each other's powers better and form a strong friendship.
Another idea is that Zelda characters find themselves in the Naruto world. They could get involved in the ninja academy and learn about chakra. Maybe Zelda herself could try to master some of the ninja arts and use her magic in combination with it. This would lead to a lot of interesting interactions between the Zelda characters and the ninja students.
One plot idea could be a training arc. Naruto could teach Illya some basic ninja skills like stealth or tree - climbing, while Illya could show Naruto some of her magic spells for defense. Another idea is a mystery - solving plot where they team up to figure out why strange things are happening in both their worlds. For example, strange creatures are appearing in Konoha and in Illya's town that seem to be related.
One plot idea could be a female Sasuke who uses her unique skills in a different way than the male Sasuke in the original. For example, she might focus more on diplomatic solutions to problems in the ninja world, using her intelligence and combat skills to broker peace treaties.
One idea could be that the male vampire dragonborn struggles with his dual nature. He has the power of the dragonborn but also the thirst for blood as a vampire. For example, he might face a moral dilemma when using his dragon shouts to save a village that is afraid of his vampiric side. Another plot could involve him seeking a cure for his vampirism while still trying to fulfill his destiny as the dragonborn. He could travel to ancient ruins in search of a lost spell or artifact that might reverse his condition.
One common theme could be the struggle between their different natures. Alduin is a powerful and often seen as a menacing force, while the Dragonborn has his own heroic qualities. The clash and reconciliation of these opposing characteristics can be a central theme.