What could be an interesting plot in a Sephiroth Naruto crossover fanfiction?

One possible plot could be that Sephiroth, with his superhuman abilities and thirst for power, somehow ends up in the Marvel universe. The Avengers initially mistake him for a new, extremely dangerous threat. They try to fight him but quickly realize his power level is off the charts. Then, they might try to find a way to send him back to his own world while Sephiroth, intrigued by the power sources in the Marvel universe like the Infinity Stones, tries to get his hands on them.

Well, it could be about Sephiroth using his incredible combat skills from Final Fantasy in the world of Attack on Titan. Maybe he teams up with the Survey Corps to take on the Titans. He might use his Masamune sword to slice through the Titans' nape with ease, bringing a new level of badassery to the fight against the Titans.

Well, it could be that Naruto is reborn as a sort of hybrid of himself and Sephiroth. His appearance might change slightly, with some of Sephiroth's features. In the story, he might have to learn to control the new powers which are far more destructive than his normal chakra - based abilities. And his friends, like Sasuke and Sakura, would be both confused and worried about this new Naruto.

One possible plot could be that the Thundercats are transported to the Naruto universe. They might be mistaken for powerful ninjas at first. Lion - O could end up learning some ninja techniques and share his sword - fighting skills with the ninjas. Cheetara could use her speed in the same way as some of the fast - moving ninjas in Naruto. And they could all team up to fight a common enemy, like a powerful rogue ninja who has some dark magic similar to the villains in the Thundercats' world.

One possible plot could be that Riddick somehow gets transported to the Naruto universe. He could initially be seen as a threat, but then he teams up with Naruto and the others to fight a common enemy, like a new powerful Akatsuki member who has powers similar to some of the creatures in Riddick's world. Riddick's combat skills and his ability to see in the dark could give the Naruto gang an edge in battles.

One possible plot could be that Naruto has to go on a special mission with Kurenai. They might be sent to a hidden village where they discover a new type of jutsu that is being misused. Kurenai's genjutsu skills and Naruto's rasengan could be combined in unique ways to fight against the villains using this jutsu.

A cool plot might be that the Tailed Beasts in the Naruto world are being targeted by an unknown force from the Marvel universe. The Avengers, thinking it could lead to a greater threat to both universes, come to help. Naruto and the Avengers have to work together to protect the Tailed Beasts. Hulk could have an interesting interaction with the Tailed Beasts, perhaps learning from them how to better control his rage, while the ninjas are amazed by Thor's lightning powers and try to incorporate some of that into their own jutsu.

Well, perhaps there's a magical object in the Charmed universe that is the key to unlocking a new power within Naruto. And in return, Naruto has to help the Charmed ones protect this object from a group of rogue ninjas who have also found their way into the Charmed world. The ninjas want to use the object to gain ultimate power over both worlds. Naruto could teach the sisters some ninja techniques like stealth and hand - to - hand combat while they help him understand and control the new power with their magical knowledge.

One possible plot could be that Naruto, while on a mission in a strange new land, stumbles upon a portal that transports him to the Witcher's world. There, he meets Geralt and they initially have a misunderstanding due to their different cultures. But as they face a common enemy, like a powerful dark magic - using creature that is terrorizing the local villages. Naruto's unique jutsu abilities combined with Geralt's monster - hunting skills make for an exciting battle. They learn from each other's fighting styles and Naruto also gets to experience a different form of magic in the Witcher world.

One possible plot could be that Naruto and his friends are somehow transported to the Winx world. Naruto, with his ninja skills, could help the Winx girls in a battle against a powerful dark force that has emerged. Maybe they exchange their powers and techniques, like the Winx teaching Naruto some magic while he shows them some cool ninja moves.