I'm not sure of a specific one off - hand, but a unique plot could be where the oxygen masks are actually ancient artifacts that hold the key to unlocking a powerful jutsu. The characters have to go on a quest to find all the parts of the masks and assemble them correctly while being chased by rival ninja clans who also want the power.
A really unique plot might be a fanfiction where the oxygen masks are sentient. They choose their wearers based on some special criteria and they have their own will. In this story, Naruto might be chosen by an oxygen mask that has a mission for him, something that goes against what he initially believes but is crucial for the safety of the ninja world.
A possible plot could be that Naruto gets injured during a really tough battle and needs to use an oxygen mask to recover. His friends then have to protect him while he's in this vulnerable state, and there could be some emotional moments as they worry about his well - being.
I'm not sure about a specific fanfic just on Naruto's oxygen mask. But you could try looking on fanfiction.net or Archive of Our Own. They have a vast collection of Naruto fanfics, and you might be able to find one that involves an oxygen mask in some interesting plot.
I'm not sure of a specific 'bts jin oxygen mask fanfic' to recommend. You can try searching on fanfic platforms like Archive of Our Own. There might be various creative stories related to this concept there.
Sure. There's a fanfiction where Naruto adopts a jinchuriki child from another village. This plot is unique because it delves into the relationship between two jinchuriki - Naruto, who has experienced so much as a jinchuriki himself, and this new child. He has to not only protect the child from those who would seek to use their power but also help the child come to terms with being a jinchuriki, which is a really interesting take on the Naruto universe.
A great Naruto Maki fanfiction with a unique plot is one where Maki has the ability to communicate with animals in a way that Naruto can't. They go on a mission together in a forest where they need to find a lost scroll. Maki's animal communication skills help them track down the scroll faster as the animals lead them to the location. It's a fresh take on how their skills can complement each other.
There's a fanfic called 'Seal Master Naruto'. In this one, Naruto has an unexpected encounter with an old sage who teaches him about a new form of seal that can manipulate energy in ways never seen before. The plot gets interesting as Naruto has to keep this new knowledge a secret from some of his friends who might be corrupted by its power. It's a really unique take on the Naruto Seals concept as it dives deep into the power and mystery of the seals.
Sure. There's a fanfiction where Groudon is summoned by a rogue ninja who wants to use its power to take over the ninja villages. Naruto discovers this and has to figure out how to stop the rogue ninja and send Groudon back. The unique part is that Naruto has to use his knowledge of both the ninja world and some ancient legends about Groudon that he stumbles upon.
Sure. There's a fanfiction where Obito is actually reborn as Naruto's twin brother. It's a really unique take as they grow up together, and Obito has all his past memories. This changes the dynamic of the whole Naruto story as Obito now has a second chance at life and is trying to make things right from the start with Naruto by his side.
Sure. There's one where Lee loses his ability to use taijutsu temporarily. Naruto helps him by sharing some of his chakra in an experimental way. This gives Lee a new kind of power that combines his taijutsu style with Naruto's chakra flow. It's really unique as it shows a different side of their friendship and how they can help each other in unexpected ways.
Yes, there might be one where Satan sends Naruto on a quest to retrieve a powerful dark artifact. The catch is that this artifact was once used to seal away an evil that could destroy the world if released. Naruto has to navigate through various challenges and also face the distrust of his own village as he is seen consorting with Satan.