One common theme could be power struggles. Since Naruto has his own set of powers and Tiamat is often depicted as a very powerful being, there could be a lot of tension regarding who is more powerful and how they interact in terms of power. Another theme might be the clash of different cultures or mythologies, as Naruto is from a ninja - based world and Tiamat has her own origin in different mythologies.
One common theme is power. Since Tiamat is a very powerful being in the 'Highschool DxD' world, fanfictions often explore how Issei's power grows or is affected by his relationship with her.
Naruto might be initially in awe of Tiamat's powers. Given his curious nature, he would likely try to understand how they work. He could attempt to adapt some of her power - using techniques into his own ninja fighting style.
Yes, there are quite a few. You can check out some fanfiction platforms like FanFiction.net or Archive of Our Own. Just search for 'Naruto and Tiamat' and you'll find a variety of stories with different plotlines and interpretations.
One idea could be that Naruto somehow gets transported to the world where Tiamat exists. He has to use his ninja skills to survive in a completely different and magical realm. Maybe he teams up with local heroes to face a threat that Tiamat also has an interest in.
In Naruto maries Tiamat fanfiction, perhaps there could be a focus on the political implications. If Naruto, who is a hero in his own world, marries Tiamat, it could change the power dynamics between different villages. Allies might become more eager to strengthen their bonds with Naruto's village, fearing the new power that the union brings. Enemies, on the other hand, might form new alliances to counter this potential threat.
One common theme is character relationships. For example, exploring the deepening friendship between Naruto and Sasuke, or Naruto's romantic relationships with characters like Hinata. Another theme is the expansion of the ninja world. Writers might create new villages, new ninja clans, or new jutsu. Also, the idea of alternate universes is popular, where the events in the original 'Naruto' series take a different turn.
One common theme is alternate universes. Writers often like to create scenarios where Naruto and his friends are in a different world altogether, like a modern - day setting or a fantasy world other than the ninja world. This allows for a fresh take on the characters.
In some fanfictions, their relationship might develop due to a prophecy. There could be an ancient prophecy that foretells the union of Naruto and Tiamat as the key to saving multiple universes. At first, they might be reluctant to believe it, but as events unfold and they see the signs, they start to consider the possibility. This leads them to explore their relationship further, and eventually fall in love as they fulfill the prophecy's requirements.
One common theme is the passing of the torch. Older Naruto is often shown mentoring the younger generation, like how Kakashi mentored him. Another theme is dealing with the scars of past battles, both physical and mental.
One common theme is the exploration of their self - discovery. Since they are the same person in a sense, they can see different aspects of themselves. For example, one Naruto might be more confident while the other is more reserved, and they learn from each other.