A plot idea could be that a powerful Spirit in Date A Live is somehow transported to the Naruto world. This Spirit's power causes chaos, and Naruto and his friends have to figure out how to send it back. Along the way, they discover that the Spirit has a tragic past similar to some of the characters in Naruto. This leads to an unexpected bond between them.
Another idea is that the Akatsuki from Naruto are interested in the power of the Spirits in Date A Live. They start capturing Spirits to use their powers for their own evil plans. The Date A Live characters then team up with Naruto and the other ninja who oppose the Akatsuki. Together, they fight to rescue the Spirits and stop the Akatsuki's scheme. This would involve a lot of intense battles and strategic planning from both sides.
Perhaps there is a prophecy in both worlds that foretells of a combined hero from Naruto and Date A Live. A character who has the powers of both ninja and Spirit. This leads to a search for this special individual. As different characters from both universes interact during the search, they learn about each other's cultures and values. And in the end, they might find that the hero is not just one person but a group of characters who together represent the best of both worlds.
One possible plot could be that Naruto and his friends are somehow transported to the world of Date A Live. Naruto, with his determination and never - give - up attitude, could team up with Shido to fight against the Spirits that are causing chaos. Maybe Naruto's jutsu can be used in unique ways to deal with the Spirit - related problems, like using his Shadow Clone Jutsu to distract the Spirits while Shido tries to seal them.
The plot might involve a threat that requires both the Naruto universe and the Date A Live universe to work together. For example, a powerful enemy that is immune to normal attacks in both worlds. So, the characters from both would have to combine their unique abilities. Shido from Date A Live could use his power to calm spirits while Naruto uses his shadow clones to create diversions. It would be a story full of action, adventure, and some really cool power combinations.
One idea could be exploring an alternate universe where the Spirits and the main character have different initial meetings. For example, instead of meeting in a battle - like situation, they meet in a peaceful school event. Another plot could involve a Spirit who has lost her powers and the main character has to help her regain them without using the usual methods. It could lead to a whole new adventure and deeper understanding between them.
One idea could be that the protagonist travels back in time to prevent a certain spirit from becoming a threat in the first place. Maybe they change a key event in the spirit's past that alters their future path.
In a 'Naruto in Date A Live' fanfiction, Naruto could be a key figure in preventing a total war between the Spirits and humans. His ability to understand and empathize with outcasts (like he did with Gaara) could help him communicate with the Spirits on a deeper level. He could teach Shido some of his ninja techniques to better protect the Spirits and also use his own chakra to help stabilize the space - quakes caused by the Spirits, thus bringing a new hope for peace in the Date A Live world.
Another interesting OC could be a spirit who has the ability to communicate with animals. This OC could bring a whole new dynamic to the story as she tries to understand the human world through the eyes of the animals she befriends. She might also use her animal friends to help Shido in his missions, like having birds spy on the AST or something.
One idea could be that the main character has memories of their past lives and uses that knowledge to change the fates of the Spirits in a more positive way. For example, they might be able to prevent some of the more tragic events that usually occur in the original story.
The power combinations are also really fascinating. When Naruto's chakra - based powers are combined with the Spirits' abilities in Date A Live, it can lead to some really unique and powerful new abilities. For example, if Naruto were to combine his Sage Mode with a Spirit's power, it could create a whole new level of combat ability. This allows for some very creative fight scenes in the fanfiction.
One interesting plot idea could be a crossover where Naruto's senjutsu abilities are combined with another universe's magic system. For example, if he were to cross over into the Harry Potter universe, he could use senjutsu to enhance his magic or even teach the wizards about chakra. Another idea is a crossover with the Dragon Ball universe, where Naruto's senjutsu clashes with the ki energy of the Saiyans. Maybe he has to use senjutsu to face off against a powerful Saiyan who has come to the Naruto world. Or a crossover with the Bleach universe, and Naruto uses senjutsu to interact with the spiritual energy there, perhaps even helping Ichigo in a battle against a powerful Hollow by using his unique senjutsu skills.
One plot idea could be that Naruto characters end up in Ikebukuro. For example, Naruto himself could be searching for a new type of ninja tool that he heard can only be found in Ikebukuro. Meanwhile, the gangs in Durarara start to notice this strange, orange - clad boy with strange powers. Another idea is a character swap where some of the Durarara characters gain ninja abilities and get involved in Naruto - style battles in their own world. Maybe Celty could use her shadow powers in a more ninja - like way, like stealth and quick attacks.