One possible plotline could be that Naruto discovers some sort of corruption within the ANBU. Maybe they are being used for evil purposes by a hidden group. So, in his quest for justice, he decides to banish them to protect the village. Another could be that the ANBU has become too extreme in their methods, and Naruto, as Hokage, believes in a more peaceful and inclusive approach, thus banishing them.
It could be that Naruto has a vision for a new type of security system in the village that doesn't require the ANBU in its current form. He might see their secrecy and lack of transparency as a threat. So, he banishes them and starts to build a new force that is more accountable to the villagers.
One possible plotline could be that Naruto discovers a group of S - rank ninjas who are secretly plotting against the Hidden Leaf Village. He decides to banish them to protect the village. Another plotline might involve Naruto being forced to banish an S - rank ninja who has committed a heinous crime but has some sort of connection to him. Maybe it's an old friend turned bad. And a third plotline could be that Naruto banishes S - rank ninjas from other villages who have invaded the Hidden Leaf and are too powerful to be kept as prisoners.
One possible plotline could be that Naruto, heartbroken from a failed relationship or the loss of a dear friend, throws himself into the dangerous and secretive world of ANBU to numb his pain. He might start off as a reckless agent, but gradually find purpose in protecting the village in a more covert way. This could lead to him making new, deeper friendships within the ANBU ranks.
A common plotline could be Naruto returning to Konoha as a powerful and changed individual. He might be hesitant to help the village at first due to his banishment, but eventually, his kind heart prevails. Konoha, in turn, has to grovel and make amends for their past mistake.
One possible plot could be that in a strange crossover world, Naruto sees Pokemon as a threat to his village's way of life. So, he decides to banish them. Maybe the Pokemon's powers are causing chaos in the ninja world, like Pikachu's electricity short - circuiting ninja tools. Naruto, being the hero, takes it upon himself to send the Pokemon back to their own dimension.
One possible plotline could be that Kakashi is assigned to train Sakura within the ANBU. He could teach her some of his signature jutsu and survival skills. Sakura, being a quick learner, starts to adapt to the ANBU's harsh and secretive environment. They might be sent on a mission together where they have to infiltrate an enemy base. Sakura uses her medical ninjutsu to heal Kakashi when he gets injured during the infiltration, and together they manage to complete the mission successfully.
One possible plotline could be a comical take where Naruto, perhaps as a baby or in a situation where he's regressed to a younger state in diapers, accidentally uses his newfound baby - like clumsiness to his advantage in a prank - like way against his friends. For example, he might 'accidentally' spill something on someone while being carried, leading to a series of funny events.
One possible plotline could be that Naruto and Ino are on a mission together. They start off bickering like they used to in the original series, but as the mission progresses, they begin to understand each other better. For example, they might face a powerful enemy that forces them to rely on each other's unique skills. Naruto's brute strength and Ino's mind - control abilities could complement each other in combat. Another plotline could be a more emotional one where Ino helps Naruto deal with his inner demons related to his past. She could use her skills to get inside his head in a more positive way and help him come to terms with things.
Perhaps a plot where Himawari discovers a new and rare chakra ability, and Naruto helps her to understand and control it. They might go on a journey to find someone who can further teach her about this power. This could involve meeting old friends of Naruto's along the way and having various adventures together.
One possible plotline could be that Sakumo is in a dangerous mission situation where he is outnumbered and on the verge of defeat. Naruto, with his powerful jutsu and never - give - up attitude, arrives just in time. He uses his Rasengan to take out the main threats and then uses his shadow clones to rescue Sakumo from the surrounding enemies.
In this fanfic, it could be a fight in an alternate universe where Naruto and Hinata belong to rival clans. Their clans' long - standing feud forces them to fight each other. However, during the fight, they start to realize that the feud is baseless and they might even develop a new understanding of each other and their clans' history.