His intelligence and strategic thinking would also be affected. He would have to adapt to new political landscapes, like the complex relationships between the three main factions in Highschool DxD (devils, angels, and fallen angels). He might use his skills to broker peace or manipulate situations to his advantage in this new and different world.
Itachi's combat abilities could be enhanced or modified. With the presence of different magical and supernatural elements in Highschool DxD, his chakra-based attacks could potentially be combined with the ambient magic in that world. For instance, his fire - style jutsu might gain new properties when used in an area filled with demonic or angelic energy.
Naruto's abilities would likely disrupt the power balance significantly. His Rasengan alone is a very powerful attack. In the Highschool DxD universe, where most powers are based on magic and demonic or angelic abilities, Naruto's chakra - based attacks would be something new. His ability to create thousands of shadow clones could also give him an edge in battles and in other aspects like gathering information. For example, he could send clones to different areas to spy on the various factions in the Highschool DxD world.
His speed would likely be enhanced. In the DxD universe, there are fast - moving opponents like the devils and angels. Naruto, already known for his incredible speed in his own world, would need to adapt and become even faster. His rasengan, for instance, might be modified to be more effective against the magical defenses of DxD characters.
Naruto's chakra abilities would likely be seen as a very unique form of power in the DxD universe. His ability to use shadow clones could be a great advantage in battles or even in daily school life in the DxD setting. He could send clones to attend different classes or spy on enemies. His Rasengan, being a powerful concentrated form of chakra, might be equivalent to a very high - level magic attack in the DxD world, and could potentially be enhanced further by the magical energy present there.
Naruto's abilities would bring a whole new dynamic to the Highschool DxD universe. His ability to use chakra to walk on walls and water could give him an advantage in certain terrains or situations. In battles, his ability to sense chakra could help him detect hidden enemies. Also, his summoning jutsu could call upon powerful creatures from the Naruto universe. If these creatures were introduced into the Highschool DxD world, they could change the balance of power. And his various transformation jutsu could be used for disguise or to gain temporary boosts in power.
His projection magic might be affected by the different magical rules in the Highschool DxD world. Maybe it becomes more powerful or has some new limitations. For example, projecting holy swords could have a different energy cost or be more effective against certain types of devils or fallen angels.
If Superman were in Highschool DxD fanfiction, the power dynamics would be drastically altered. Superman's super strength, speed, and heat vision would make him an overpowered character. He could easily defeat most of the foes in the Highschool DxD universe. This would likely change the plot as many of the story arcs in Highschool DxD revolve around the characters gradually growing in power and facing challenges that match their strength. It might also lead to different character interactions. For example, Superman's moral code might influence the more morally ambiguous characters in the series.
Well, the Bleach captains' abilities are quite powerful. For example, Hitsugaya's ice-based zanpakuto could be used in interesting ways in the DxD world. It could freeze demons in their tracks. Their spiritual pressure might also have a significant impact on the supernaturals in DxD. They could potentially intimidate lower - level devils or fallen angels just with their presence.
Madara's Sharingan would be a very unique ability in the Harry Potter world. It could be used for things like detecting lies, seeing through invisibility spells that are not as advanced as the Sharingan's capabilities, and predicting an opponent's moves in duels. His ability to use fire - based jutsu could be seen as a form of very powerful and different magic. Also, his physical combat skills would make him a formidable opponent in a world where most rely on wands for combat.
Another plot could be that Itachi has lost his memories and wakes up in the Highschool DxD world. He slowly regains his skills and memories as he experiences the various events in the school. His relationships with the characters in this new world would be very interesting to explore, especially as he starts to remember his past and how it might relate to the new situation.
Goku would fit in as a super - powerful outsider. His physical strength and combat skills are far beyond what the normal characters in Highschool DxD are used to. He could become a sort of protector for the school, using his powers to fend off any threats that come their way. His energy - sensing ability would give him an edge in detecting hidden enemies.