Another creative use could be using the Sharingan's illusory powers to create false scenarios in the Highschool DxD world. This could be used for various purposes like tricking enemies in battle or creating a diversion. The Sharingan's ability to create powerful illusions could be a game - changer in the often chaotic battles of the Highschool DxD universe.
A creative use could be using the Sharingan to copy the magic or abilities of the characters in Highschool DxD. Since the Sharingan can copy jutsu in Naruto, it could be extended to copy spells in the DxD world. This would make the character with the Sharingan very versatile in combat and magic usage.
Perhaps using the Sharingan to enter the minds of the characters in Highschool DxD. In Naruto, the Sharingan has some mind - related abilities. In the fanfiction, this could be used to understand the motives and fears of the DxD characters, which could then be used to manipulate or help them depending on the plot. For example, entering the mind of a devil to find out their secrets or to help them overcome a mental block.
One of the most creative crossovers could be having Naruto characters with Sharingan abilities in the Highschool of the Dead setting. For example, Naruto's determination combined with the power of the Sharingan could make for some really interesting survival scenarios. They could use their ninja skills to fight off the zombies in a more strategic way compared to the original Highschool of the Dead characters.
In a Sharingan Naruto Highschool DxD fanfiction, the Sharingan could also play a role in terms of illusions. Imagine a scenario where the character uses Sharingan - based illusions to deceive the enemies from both worlds. They could make a Highschool DxD devil believe they are in a completely different environment like a dangerous Naruto - style forest filled with traps. And for Naruto characters, they could be made to see illusions of their worst nightmares or false threats from the Highschool DxD world, which would make for some really intense and engaging storylines.
A creative plot could be Naruto being a werewolf who is sent to the Highschool DxD world to stop an impending doom that only his unique combination of abilities can prevent. Maybe there's a prophecy in the Highschool DxD world about a being with both ninja skills and werewolf powers that will save them all. Another plot could be that Naruto's werewolf form is the result of a curse from an ancient devil in the Highschool DxD world, and he has to find a way to break the curse while also dealing with the power struggles in that world.
One way could be through a crossover character. Imagine a character from Naruto's world ending up in the Highschool DxD universe with their Sharingan. They could use it in battles against the devils and fallen angels in the Highschool DxD world. For example, the Sharingan's ability to predict movements would give them an edge in combat.
One way to incorporate Naruto's Rinne Sharingan in a Highschool DxD fanfiction could be through a crossover event. Maybe a character from the Naruto universe accidentally ends up in the Highschool DxD world and has the Rinne Sharingan. Their unique powers could disrupt the balance in the new world, leading to various interesting plot developments. For example, they could use the Rinne Sharingan's abilities to see through illusions in the Highschool DxD world which is full of magic and deception.
One interesting interaction could be between a Sharingan - user and a devil from Highschool DxD. The devil might be initially intrigued by the strange power of the Sharingan, not understanding how it works. The Sharingan - user, on the other hand, might be cautious of the devil's powers. For example, they could be sizing each other up in a tense first encounter, trying to figure out the other's weaknesses.
One creative use is turning the bubbles into mini - prisons. In some fanfictions, Naruto can trap enemies inside the bubbles, which are then made unbreakable. This is a really cool and unique way to use the jutsu.
One creative use is in espionage. In some fanfictions, Naruto can send out his chakra strings like invisible feelers. They can attach to objects or people from a distance and transmit back information, like a chakra - based surveillance system.
A creative one could be where Shirou's reality marble from the Fate series somehow merges with the Highschool DxD world, creating a really unique and strange new setting. For example, the landscapes from his reality marble start to appear in the DxD world, and the characters have to figure out what's going on. Another creative fanfic might be Shirou being reincarnated as a devil in the DxD world but still retaining his memories and abilities from his past life, leading to some really interesting power - ups and plot twists.
One plot idea could be a character from Naruto ending up in the Highschool DxD world and having the Rinne Sharingan. They could use its powers in the battles against the devils and fallen angels in the new world.