Communication might be a big issue. Naruto comes from a world where people communicate in a certain way, and Moka is from a different, more supernatural - oriented culture. They may misunderstand each other's intentions or not be able to fully convey their thoughts. Also, if they are in a world that is not familiar to both of them, they would have to adapt quickly to the new environment while also dealing with their own personal differences.
Yes, there are likely some 'godlike naruto x moka fanfictions' out there. You can try searching on fanfiction websites. Some might be well - written with interesting crossovers between the Naruto universe and the world where Moka is from.
One idea could be a crossover where Naruto finds himself in the world of Inner Moka Lemon. He could team up with her to fight a common enemy that threatens both their worlds. Maybe an evil force that wants to steal Inner Moka Lemon's powers and use them to take over Naruto's world as well.
In some fanfictions, the connection between Naruto and Sparda might be created through some convoluted plot devices. Maybe a powerful being in the Naruto universe has a link to Sparda's world, and through some magic or special bloodline manipulation, Naruto ends up being related to Sparda's bloodline. However, it's mostly a creative and often far - fetched idea in the realm of fanfiction.
In a fanfiction, Naruto could inherit some of Inutaisho's traits. For example, he might gain enhanced senses like super - hearing or smell. This would change the way he approaches battles and missions. He could use these new abilities to his advantage, perhaps even being able to sense traps or hidden enemies before they become a threat.
One possibility could be that Naruto inherits Alucard's incredible regenerative abilities. This would make him even more difficult to defeat in battle. He could also gain some of Alucard's vampiric powers, like enhanced strength and speed, which would give him an edge over his opponents in the Naruto universe.
One idea could be that Naruto has an innate ability to control the Sharingan more effectively than Sasuke. Since he's a descendant of Madara, his chakra might be more attuned to the Uchiha powers. This could lead to new jutsu combinations, like mixing the Rasengan with some form of Sharingan - enhanced fire style. It would also create a whole new dynamic in his relationship with Sasuke, as Sasuke would have to come to terms with Naruto having a stronger connection to the Uchiha heritage than he does.
Since this is a rather odd combination, it's hard to define specific characteristics. However, if we consider Naruto and Moka separately in fanfiction, Naruto - related fanfictions often have elements of ninja skills, village politics, and his journey to become stronger. Moka - related (assuming from Rosario + Vampire) would have vampire and school - life elements. But this 'big cock' addition makes it hard to categorize in a normal sense.
One possible scenario in Naruto and Moka Akashiya fanfiction could be a meeting between Naruto's world of ninjas and Moka's world of monsters. Naruto's determination and never - give - up attitude might clash with Moka's more reserved yet powerful nature. For example, they could team up to fight a common enemy that somehow spans both their worlds, like a dark force that wants to use the power of ninjutsu and the strength of monsters for evil purposes.
Character growth is also a major theme. Both Naruto and the characters from DxD have room for growth. In these fanfictions, they often learn from each other. For instance, Naruto might learn about the more complex social hierarchies in the DxD world and grow as a person, while DxD characters could learn about Naruto's perseverance and willpower.