How could Alduin be incorporated into High School DxD fanfiction?

Alduin could play the role of an antagonist. He might be seeking to conquer the High School DxD world, using his powerful abilities. His dragon nature gives him an edge in combat and destruction, which could pose a major threat to the various factions in the story.

One way could be through the power system. The EMS (Eternal Mangekyou Sharingan) from Naruto could be a unique power that a character in the High School DxD world acquires. Maybe a transfer student from a hidden ninja village arrives at the high school and has to keep their EMS a secret while dealing with the devils and angels in the school. This could lead to some interesting battles and interactions as the powers of the EMS, like the ability to use powerful jutsus, contrast with the magic and abilities of the High School DxD characters.

Naruto's Rasengan could be transformed into a new type of attack in the High School DxD universe. Maybe it could be combined with the sacred gears' powers. For example, if a character has a gear related to fire, the Rasengan could be infused with that fire element to create a more powerful and unique attack. This would show how Naruto's powers can be integrated into the DxD world while also maintaining his 'Immortal God' - like status in the fanfiction.

Well, Ben could use his alien forms to help out the characters in High School DxD in battles. For example, if there's a fight against a powerful devil, Ben could transform into Four Arms and use his super strength. The characters in DxD would be amazed by his abilities.

Asta could be brought into the High School DxD fanfic as a result of a multiverse - related event. In this case, different universes are colliding or being connected in some way. His presence would disrupt the power balance as his anti - magic is something that no one in the High School DxD world has really encountered before. He could end up training with the devils to learn more about their magic while also teaching them about the concept of anti - magic.

One possible plot is that Gilgamesh views the High School DxD setting as beneath him at first. But as he gets to know the characters like Issei and Rias, he starts to see the value in their struggles. He could then use his vast resources and power to help them in their fight against stronger enemies, all while maintaining his haughty and kingly demeanor.

Well, Naruto has a big heart and is always ready to help others. In the context of a High School DxD harem with Kuroka, he could use his knowledge of ninjutsu to teach the others some new combat techniques. His ability to make friends easily would also play a role. Kuroka, being a cat - like character, might be intrigued by Naruto's different species and his unique chakra. Naruto could also adapt to the different social norms of the DxD world and become an important part of the harem.

Another possibility is that there is a tournament that spans multiple universes. Naruto is selected to represent his world, and Rias volunteers or is chosen to represent the High School DxD world. They meet at the tournament grounds. At first, they might be a bit suspicious of each other, but as they see each other's skills and determination in the battles, they start to respect and eventually become friends, working together to win the tournament for their respective worlds.

Goku Black could potentially enter the High School DxD world through a dimensional rift or some sort of magical accident. Once there, his Saiyan pride and his dark motives (from his own story) could lead to him either trying to take over the various factions in the DxD world or simply looking for a worthy opponent. He might interact with the main characters like Issei, perhaps seeing him as a target to prove his superiority or a potential ally in his own schemes.

In High School DxD fanfiction, the Juggernaut is often portrayed as an extremely powerful being. It might have a menacing appearance with its large and imposing physique. It could be shown as having a single - minded focus on achieving its goals, whether it's destruction or some other objective.