Well, in a 'Naruto move to Anbu' fanfiction, Naruto could be recruited by an Anbu captain who sees his potential. Once in the Anbu, he might have to deal with the internal politics and secrecy. He may discover secrets about Konoha that were hidden from him before. And his relationships with his friends like Sasuke and Sakura could be strained as the Anbu work often requires secrecy from outsiders.
One possibility is that Naruto joins the Anbu to prove himself even more. He might face challenges like learning the stealthy ways of the Anbu which are very different from his usual open - combat style. He could also be sent on dangerous solo missions that test his limits both physically and mentally.
It could be Itachi. Even though Itachi has his own complex past, he is highly skilled in Anbu - like operations. He could show Naruto the ropes of the Anbu world, teaching him how to analyze situations quickly and make tough decisions that are often required in Anbu missions.
One possible plot could be Naruto retiring from the ANBU due to the toll it has taken on his mental and physical health. He might then focus on mentoring the next generation of ninja in Konoha, sharing his unique skills and experiences.
One possibility is that Naruto is sent on a top - secret mission by ANBU. Maybe he has to infiltrate a powerful enemy organization. His disappearance could be part of a long - term undercover operation where he has to cut off all ties with his friends and the village for a while to avoid suspicion.
As the ANBU commander, Naruto would surely face many challenges. He'd have to deal with the politics within the ANBU itself. There might be some members who are resistant to his new ideas or way of doing things. Also, he'd need to balance his duties as a commander with his personal relationships, like his friendship with Sasuke and others. Maybe he'd use his position to try and bring Sasuke back to the village in a more official capacity as part of the ANBU's operations.
Well, in such a fanfiction, perhaps Naruto has just lost Sasuke again and is deeply depressed. The ANBU, seeing his skills and his need for a distraction, recruit him. He starts off being a bit of a misfit in ANBU, not following all the rules because of his independent nature. But as he continues, he starts to understand the importance of their work. He might even form new bonds with his ANBU comrades, which slowly help him come out of his depression.
One possible plot could be Naruto and Kurama having to work together on a top - secret ANBU mission. Naruto might have to rely on Kurama's power in a more covert way compared to his usual battles. Maybe they are sent to infiltrate an enemy stronghold where Naruto uses his ninja skills and Kurama's chakra to remain undetected.
Perhaps the ANBU has a personal vendetta against someone in Konoha who is too powerful to take on while remaining in the village. Leaving Konoha gives them the freedom to train and gather allies to come back and face their enemy. They might leave secretly, under the guise of a mission, and start building their strength in the outside world, all while Konoha is left in the dark about their true intentions.
Well, it could be about a young prodigy in the Anbu who is overlooked because of Naruto's fame. Maybe this prodigy has amazing skills like being able to use unique jutsus or having extraordinary stealth abilities. But everyone is so focused on Naruto that the prodigy is left in the shadows and has to struggle to prove himself.
In such a fanfiction, the plot could involve Naruto being constantly overlooked by the village. Fed up with this, he decides to join ANBU to prove his worth. He might face challenges like distrust from his ANBU comrades at first because of his reputation. But as he goes on missions, he shows his skills and determination, gradually earning their respect and changing their perception of him.
Well, one possibility is that Naruto is forced into pickpocketing the ANBU due to some dire situation. Maybe he needs to steal a special item from them to save a friend. For example, if his friend is poisoned and the only antidote is in the possession of an ANBU member, Naruto might see pickpocketing as the only option.