Cloud could fit in by being a transfer student with a reputation for being a lone wolf. In the Highschool DxD setting, he might initially seem out of place. But his skills with a sword could be seen as a form of sacred gear - like ability. He might not be interested in the usual high - school drama, but get dragged into it because of his sense of justice, which is a big part of his character.
Cloud Strife would likely be a bit of an outcast at first in the Angel Highschool DxD setting. His serious and brooding nature might not fit in with the more flamboyant characters. However, his sense of justice could lead him to get involved in the battles against the various evils in the DxD world. He might form an unlikely alliance with some of the devils or angels there, gradually learning about their world and how to use his skills to help them.
As a teacher, Cloud might struggle with the more magical aspects of the DxD curriculum. But he could offer his own unique perspective on combat strategy. He could train students to be more adaptable in battle, using his own experiences of facing different types of enemies. His no - nonsense attitude would likely clash with some of the more carefree students, but he would also earn the respect of those who are serious about improving their skills.
Well, Naruto has a wide range of powerful abilities like his shadow clones, rasengan, and chakra control. In the Highschool DxD universe which is filled with devils, angels, and fallen angels, his powers could be quite unique. His shadow clones could be used for various strategic purposes, like scouting or overwhelming opponents in battles. His rasengan, being a powerful concentrated attack, could be a real threat to the supernatural beings there. And his chakra control might give him an edge in adapting to different situations compared to the more traditional magic - based powers in DxD.
They could be a new student at the high school. Their Rinnegan powers would make them stand out immediately. Maybe they would be scouted by one of the factions like the devils or the angels because of their potential power.
Cloud has his iconic Buster Sword skills. In a Highschool DxD fanfiction, these could be translated into a very powerful physical attack ability, perhaps even on par with some of the high - level sacred gears. His speed and agility in combat would also be a great addition, allowing him to quickly move around the battlefield.
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.
In the Highschool DxD fanfiction world, Naruto with the Juubi's power could be seen as a wildcard. His arrival could change the political landscape. For instance, if he sided with a particular devil family, it could shift the balance of power. His ninjutsu skills would be a mystery to the DxD characters at first, and they would have to learn how to work with him. He could also introduce new concepts like the ninja way, which could inspire the DxD characters to reevaluate their own beliefs and fighting styles.
In fanfiction, Shirou Emiya could be integrated into the Highschool DxD world by being a wildcard factor. For example, he could be a human with powers that no one expected. His strong sense of justice would lead him to get involved in the conflicts between the different supernatural groups. He might even form his own group of allies, made up of both normal students and supernatural beings who believe in his cause.
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.
He would probably also bring his ninja values with him. In a world full of power - hungry devils and angels, Naruto's values of friendship, hard work, and protecting the weak could have a big impact. For example, he might try to reform some of the more villainous characters by showing them the value of these things. He could also form strong bonds with the main characters in Highschool DxD, like Issei, based on shared ideals of fighting for what's right.