The exploration of new storylines. Fanfiction allows for the creation of new plots that wouldn't exist in either One Piece or DxD alone. For example, Luffy could get involved in the great war between the different factions in DxD, bringing his own brand of chaos and heroism to the conflict. It gives a fresh take on both universes and can be very appealing to fans of both.
The character interactions. Luffy's carefree and fearless nature can lead to some hilarious and heartwarming interactions with the characters in DxD. For instance, his interactions with the devil kings or the angels can be full of surprises. He might befriend some of them in ways that are unexpected, based on his simple view of good and bad.
The most interesting aspect is the combination of different power systems. Naruto has his chakra - based ninjutsu while DxD has its own system of magic and demonic powers. When these collide in fanfiction, it creates really cool battle scenes. For example, Naruto using Rasengan against a powerful devil in DxD. Another aspect is the character interactions. Naruto's positive and determined personality against the more complex and often morally ambiguous characters in DxD can lead to very engaging storylines.
The power comparisons are really interesting. Luffy's ability to stretch and his Gear forms against Naruto's Rasengan and other jutsu. It's like a clash of two very different power systems.
Well, the potential for unique storylines is a great aspect. For instance, the Shinju could be a catalyst for a major conflict or a solution to an existing one in the DxD world. Since Naruto has his own set of abilities and experiences, his interaction with the DxD characters can lead to all sorts of character development. The fanfiction can also play around with the different mythologies of the two worlds. The Shinju might have a connection to some ancient DxD mythology, or vice versa, which can be really engaging to explore.
The most interesting aspect is the combination of different power systems. Naruto has his chakra - based ninjutsu, while Highschool DxD has the power of Devils, Angels, and Fallen Angels. When these two power systems interact in fanfiction, it leads to really cool battles and strategic situations. For example, Naruto's Shadow Clone Jutsu could be used in a very different way against the DxD characters compared to how it's used in the Naruto world.
The unique powers are the most interesting. Like having chakra and being able to perform ninjutsu. It's cool to see how these Naruto - like abilities interact with the DxD elements.
The combination of different power systems. In 'bleach highschool dxd fanfiction', you get to see the Soul Reaper powers from Bleach interact with the Devil and Angel powers in High School DxD. It's really cool to see how they balance or clash with each other.
The cultural clash is an interesting aspect too. Naruto comes from a world of ninjas with its own values and traditions, while DxD has its own set of rules regarding devils, angels and fallen angels. Saber also brings in her own set of values from the Fate series. When these different elements collide in a fanfiction, it can result in really unique and thought - provoking situations.
The most interesting part is the power mash - up. Alex Mercer has his own set of unique and powerful abilities, and when combined with the supernatural elements of Highschool DxD, it creates really exciting scenarios. For instance, his shape - shifting abilities against the devils and angels in the DxD world.
The new settings created by the crossover. You get to see the world of Highschool DxD from Naruto's perspective or vice versa. This can lead to some unique interpretations of both worlds. For example, how would the Hidden Leaf Village look like if it was in the same universe as Highschool DxD? And how would the characters from Naruto react to the more risqué elements of Highschool DxD's world? These are all things that make the fanfictions so interesting.
Well, in this fanfiction, perhaps the relationship between Luffy and Rayleigh is explored in more depth. We might see Rayleigh sharing his old tales of the Pirate King Gol D. Roger with Luffy. This could inspire Luffy even more in his journey to become the Pirate King. Also, Luffy's character growth in terms of leadership could be a great part. Under Rayleigh's guidance, he might learn how to better lead his crew and make more strategic decisions during battles.