In these fanfictions, a common unique feature of the Hozuki bloodline is the ability to turn into a liquid - like form. This allows the characters with this bloodline to pass through small spaces, avoid attacks, and even trap enemies within their liquid bodies.
Well, in this fanfic, perhaps Naruto is sent to the Hidden Mist for some sort of exchange program. There, Mangetsu takes him under his wing. Mangetsu might train Naruto not only in combat skills but also in stealth and strategy. Naruto, with his already strong will and determination, quickly adapts to Mangetsu's teachings and starts to combine his own Uzumaki - like chakra control with the water - style jutsu he learns, becoming a more versatile ninja.
The Akatsuki could still be the main antagonists. Even with Naruto getting trained by Mangetsu, the Akatsuki's goals of collecting the tailed beasts would still pose a major threat to Naruto and the ninja world.
Since it's a fanfiction, the possibilities are quite broad. In 'naruto is a hozuki fanfiction', perhaps Naruto is on a quest that is directly related to the Hozuki clan. It could be that he discovers a hidden connection between his own powers and those of the Hozuki. For example, he might find that his chakra has some unexpected interaction with Hozuki - style jutsu. The fanfiction could also explore Naruto's relationships in this new context, like how he gets along with Hozuki clan members, or how his friends react to his newfound association with Hozuki - related things.
One common theme is mystery. The Hozuki Castle is often depicted as a place full of secrets waiting to be uncovered. Another theme is power. There might be powerful jutsus or artifacts hidden within the castle that the characters seek.
Perhaps Naruto discovers a dark secret about Hozuki Castle that the rulers don't want to be known. In an attempt to expose it, they turn the tables on him and make it seem like he's the one betraying the castle. This could lead to Naruto having to fight not only the castle's forces but also his former friends who have been misled.
Another interesting one is 'Rise of the Hozuki'. This fanfiction focuses on the history and origin of the Hozuki bloodline. It weaves a complex story that ties in different elements of the Naruto world, such as the relationships between different clans and the politics of the ninja villages. It's a must - read for any Naruto fan interested in the Hozuki bloodline.
He might face some really tough opponents. In the Naruto world, Hozuki Castle is known for being a dangerous place. Naruto would probably use his signature jutsu like Rasengan to defend himself. Maybe he'd also try to make allies among the inmates there.
Maybe a fanfic where a Hozuki ninja has to team up with a character from a different clan, like a Uchiha. They have very different fighting styles and personalities, so it would be interesting to see how they overcome their differences and learn from each other. The Hozuki's water - based abilities could be used in creative ways to complement the Uchiha's fire - based skills.
There's a fanfiction that delves into the history of the Hozuki Clan. It shows how they came to be associated with water jutsu and their relationship with other hidden villages. In this fanfic, the author explores the political implications of the Hozuki Clan's power, like how other clans might be both envious and fearful of their abilities.