Well, it could be special for many reasons. Maybe it has a unique plot that twists the original Naruto story in an interesting way. For example, it might introduce a new kind of jutsu that no one has thought of before. Or perhaps it focuses on a side character and gives them a whole new backstory and development arc.
Expect some character development. Even if it's a fanfic, it can expand on the characters we already know. For example, Sasuke might learn a new lesson about forgiveness or Naruto could grow in his understanding of leadership in ways that the original story didn't fully explore. It could also introduce new characters that interact with the existing ones in interesting ways, adding more depth to the Naruto universe.
In the world of fanfiction, the possibilities are endless. So, it's entirely possible that Naruto is one of the 10 Espada in a particular fanfic. Fanfic writers are known for their creativity in mixing and matching different elements from various shows and mangas. They could take Naruto's character and place him within the Espada hierarchy, perhaps giving him a new look, new powers, and new relationships within that framework. This can create a whole new story that both Naruto and Bleach fans might find interesting.
I'm quite sure there exists a 'Naruto is One Punch Man' fanfic. The world of fanfiction is vast and full of all kinds of creative crossovers. Writers might be intrigued by the idea of bringing Naruto's ninja skills and the unique world of One Punch Man together. For example, how would Naruto react to the overpowered villains in One Punch Man's world? And how would Saitama view Naruto's determination to protect his village? These are the kind of things that could be explored in such a fanfic.
Begin by immersing yourself in the Naruto world. Watch the anime, read the manga, and study the different cultures and clans within it. Once you're well - versed, think about what kind of story you want to tell. Is it a story of revenge, love, or something else? Decide on your main characters and their personalities. You can use existing Naruto characters or create your own. Then, start constructing your plot. Make sure it has a clear beginning, middle, and end. For example, start with a problem or conflict that the characters need to face, build up the tension in the middle, and resolve it at the end.
Since it's a 'Naruto' fanfic named 'the last one', it might center around the idea of finality in the 'Naruto' world. It could be about the last adventure of Naruto himself, where he has to face his toughest challenge yet. It could involve the last bit of chakra or the last hope for the ninja world. The fanfic might also explore the relationships between the characters in this final chapter, like Naruto and Sasuke's final bond - strengthening moment or Naruto's last goodbye to his family and friends.
Attention to detail in the Naruto world - building is a sign of a quality fanfic. This includes getting the jutsu (ninja techniques) right, understanding the different clans and their cultures, and the political and social structures of the ninja villages. For example, if a fanfic involves the Uchiha clan, it should accurately portray their Sharingan abilities and their history within the Hidden Leaf Village.
Another candidate could be Kakashi. As Naruto's sensei, he is in charge of Naruto's training and development. If Naruto continuously disobeys orders or fails to progress as he should, Kakashi might use this unorthodox method of spanking to get Naruto back on track.
Maybe it's an enemy from another village who sees Naruto as a threat to their plans. For example, if there's a group in another village that wants to start a war, they might think that getting rid of Naruto would give them an advantage. Another possibility is that it's a character who has been brainwashed or controlled by an evil force. This could add an interesting layer to the story as Naruto's friends would have to not only deal with his injury but also find a way to break the control on the stabber.
I doubt it. Since Naruto is a very popular and beloved character, a fanfic where he gets killed by Menma might not be that popular among the general Naruto fan base. Most fans enjoy stories that follow the positive and heroic themes of the original series.