In the 'naruto son of ghost girl fanfiction', perhaps the ghost girl was from a different realm. Naruto's connection to her means he has the ability to traverse between the ninja world and this other realm. This leads to adventures where he has to deal with different threats in both worlds, all while trying to keep his identity as the son of a ghost girl a secret from those who might use it against him.
The plot might involve Naruto finding out about his mother being this 'ghost girl'. This could lead to a whole new arc where he tries to understand more about his heritage. He could face challenges as the son of a ghost girl, like being ostracized by some in the village who fear the unknown, but he uses this to become stronger and prove himself.
The ghost girl could be a long - lost Uzumaki. Since Naruto is an Uzumaki, it would make sense that she is from his clan. Maybe she had some special powers that were lost over time, and Naruto is the key to bringing them back.
In a 'naruto son of bellatrix fanfiction', perhaps Naruto has some of Bellatrix's wild and unpredictable nature. He could be on a journey to discover his true identity and how he came to be Bellatrix's son. This might lead him to explore the secrets of the wizarding world and his own ninja abilities in a new light.
Well, one possibility could be that Naruto inherits some of Gilgamesh's arrogance along with his power. Maybe he has a special ability to summon ancient Babylonian weapons. And he could use this in his battles in the Naruto world, like against the Akatsuki.
One possible plot could be that Naruto discovers his true heritage as the son of a princess from a hidden kingdom. He then has to deal with the politics and expectations of the royal family while still maintaining his ninja ways. Maybe he has to protect the kingdom from a new threat using his ninja skills.
In such a fanfiction, perhaps Naruto could be shunned by the village from the start. His 'devil' heritage might give him strange powers that he has to hide. He could struggle with self - identity, different from the Naruto in the original who is seen as a hero. Maybe he has to fight against the prejudice of the people who believe the devil's son can only bring destruction.
Well, it could be about Naruto having powers related to Hades on top of his ninja skills. Maybe he can control the dead or has some sort of underworld - like abilities that he uses in battles against the Akatsuki. He might also have to deal with the stigma of being the son of Hades in a world that doesn't understand such a thing.
Maybe Naruto is raised in Gotham instead of Konoha. He could inherit some of Catwoman's skills like stealth and agility, while still having his own ninja powers. He might fight crime in Gotham using a mix of his ninja techniques and Catwoman - like thievery skills, but for good causes.
Perhaps the story involves Naruto's journey to discover his true heritage as the son of Pegasus. He might face challenges from those who don't believe or accept his origin, and he has to prove himself. Along the way, he could make new friends or allies who help him in his quest.
Well, it could be that Naruto, as the son of Thanos, has some sort of conflict between his ninja values and the power - hungry nature he might inherit from Thanos. Maybe he has to struggle with not using the Infinity Stones in the wrong way, while still trying to protect his village from other threats. He might also face discrimination from his fellow ninjas who fear his Thanos - like abilities.
Well, it could be about Naruto having powers related to the Olympian gods since he's the'son of Olympus'. Maybe he has to face threats in the Naruto world using these newfound divine abilities, like fighting stronger enemies with lightning-fast speed like Hermes or super strength like Hercules.