I think it has the potential to be good. It combines two very cool concepts - Harry Potter and the Sorcerer Supreme. However, the quality can vary a lot. Some fanfiction writers do an amazing job of weaving a new story within the existing Potterverse, while others might not be as skilled.
One possible plot could be that after the defeat of Voldemort, the magical world is in a state of flux. Harry, in his search for a way to further secure the safety of the wizarding world, stumbles upon the ancient power of the Sorcerer Supreme. He then embarks on a journey to master this power. Along the journey, he meets old friends who have different reactions to his new path, and he also uncovers a conspiracy within the wizarding world that wants to use his new power for their own dark purposes. As he grows in power, he has to make difficult choices about how to use it and who to trust.
One common theme is power expansion. Harry is already a powerful wizard in the original series, but as the Sorcerer Supreme, his powers are enhanced and he has to learn to control them. Another theme could be cross - universe encounters, like meeting characters from the Marvel universe where the Sorcerer Supreme concept originates.
Sakura could be one of his allies. Even in a sorcerer - themed fanfiction, her medical skills could be translated into some sort of healing magic within the sorcerer world, and she would always be by Naruto's side.
Yes, it can be quite popular. Combining the world of Harry Potter with the concept of the Sorcerer Supreme, which is often associated with Doctor Strange in the Marvel universe, creates an interesting crossover. Fans enjoy exploring how Harry Potter's magical abilities and world could interact with the idea of being the most powerful sorcerer, like the Sorcerer Supreme.
One interesting concept could be how Naruto's ninja skills translate into sorcerer abilities. Maybe his shadow clone jutsu becomes a form of multiplying his sorcerer power sources.
The fanfiction could start with a crossover event where a portal opens between the Naruto and Overlord universes. A character, like Sasuke, could be drawn into the Overlord world and discover he has the potential to become a supreme being. He would have to adapt to the new rules and powers while still holding onto his ninja values.
A fanfiction in this vein could explore what would happen if a supreme being from the Overlord world visited the Naruto universe. This being might be intrigued by the concept of chakra and try to harness it for their own purposes. They could also interact with the different ninja clans and cause a stir in the political and power dynamics of the Naruto world.
" Dafeng Nightwatchman " was a Xianxia online novel that was published on Qidian Chinese Network. The author was a newspaper seller. The novel described how Xu Qi 'an, who had graduated from the police academy, woke up and found himself in prison. Three days later, he was exiled to the border…The story of the edge. In the novel," shaman " was a cultivation system. It was one of the eight major cultivation systems in the world of cultivation, along with Taoism and Buddhism. Wizards mainly learned and mastered all kinds of mysterious spells and incantations to cast all kinds of powerful magic and attacks. It was a cultivation system that focused on magic attacks.
While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!