It could start with Naruto being lost or perhaps sent to Hueco Mundo by some sort of strange magic or jutsu gone wrong. In Hueco Mundo, he discovers that the power structure is based on strength. Naruto, being the determined character he is, decides to climb the ranks. He first has to understand the nature of the Hollows and Arrancars. He might learn some of their powers and combine them with his own ninja techniques. As he progresses, he starts to reform the way things are done in Hueco Mundo, and eventually, through his unique leadership style and new - found powers, he becomes the king.
Well, it could be about Naruto somehow finding himself in Hueco Mundo and rising to be its king. Maybe he uses his ninja skills to gain the respect of the Arrancars there.
Naruto is the central figure. Alongside him, we could see Aizen, the mastermind from the Bleach series. Aizen might be an antagonist or an unexpected ally. There would also be various Hollows and Arrancars. The Espada, for example, would be important characters. They would interact with Naruto in different ways, some might oppose him, while others might be intrigued by his unique abilities and his different way of thinking.
The 'naruto god of hueco mundo fanfiction' could be a creative take on combining two very different fictional universes. Naruto, with his known growth and abilities in his own series, being a 'god' in Hueco Mundo could mean he has to face new challenges. For example, dealing with the Espada, who are powerful beings in Hueco Mundo. He might use his Sage Mode or other techniques in unexpected ways to assert his god - like status and make an impact on the world of Hueco Mundo.
Since it's Naruto - themed in the Hueco Mundo, Naruto would likely be one of the main characters. There may also be characters from the Hueco Mundo like Aizen or some of the Arrancars.
It could be about Naruto discovering a hidden forest realm where he has to prove himself as the king. Maybe he has to face off against ancient forest spirits or creatures to earn that title.
Well, it could be about Naruto discovering a hidden dragon realm. He might learn to communicate with dragons and gain new powers from them. Maybe he has to fight against an evil force that wants to control the dragons for its own dark purposes.
Maybe Naruto discovers he has a hidden connection to a powerful demon king. This could lead to him having to fight against those who fear his new - found power, while also trying to control the dark forces within him.
Well, it could be about Naruto gaining the power to control the King of Hell. Maybe he makes a deal with it to save his friends. For example, he might offer his own life force in exchange for bringing Sasuke back from the brink of darkness.
One possible plot could be that Naruto is somehow transported to the world where the Soul King exists. He discovers his new role as the Soul King and has to learn the rules and powers associated with it. He might use his ninja training to face the threats that come to the Soul King's realm.
Well, it could be about Naruto achieving an even higher level of power and becoming the true 'king of kings' in the ninja world. Maybe he unites all the hidden villages under his leadership.
Well, it could be that Naruto somehow gets transported to the world where King Hassan exists. Maybe Naruto, with his ninja skills and determination, is mistaken for a great warrior like King Hassan. He could then have to take on the role and face the challenges that King Hassan would face, like protecting a certain realm or fighting powerful enemies using a combination of his ninja jutsus and the powers associated with King Hassan.