Hypnosis can make characters more trusting or more suspicious of each other. For example, if one character hypnotizes another to believe they are a friend, it can create a false sense of security. Or if a character discovers they've been hypnotized by someone they thought was a friend, it can lead to a breakdown in trust.
In these fanfictions, hypnosis often serves as a means to unlock hidden aspects. For Naruto, it can be a way to access Kushina's memories or powers. For example, he might be able to use hypnosis to remember the times Kushina spent teaching Minato some secret jutsu. Hypnosis can also create a deeper connection between Naruto and his mother, allowing him to understand her better on an emotional level.
If Naruto hypnotizes Tsunade, it could initially disrupt her leadership. She might make uncharacteristic decisions that could throw the village into chaos. For example, she could start allocating resources in a strange way.
In some yugioh hypnosis fanfiction, a character could gain hypnosis ability by making a pact with a powerful, otherworldly being. This being might bestow the power upon the character in exchange for a favor or as part of a grander plan in the story. The character then has to navigate the moral implications of using this power while dueling. Well, this makes the story more complex and interesting.
It could be a wandering sage. These sages are often full of strange and powerful knowledge. They might see potential in Naruto and decide to teach him hypnosis as a way to expand his combat skills.
Hypnosis can completely change the direction of the story. It can make a character act out of character, leading to unexpected events.
Hypnosis in this type of fanfiction can be a plot device. It can be used to manipulate characters' actions or memories. For example, a villain might use hypnosis to make Percy do something against his will.
Hypnosis in these fanfics could be related to the Miraculous powers themselves. For example, if a corrupted Miraculous is used in the wrong way, it could have the power to hypnotize. The wielder of the corrupted Miraculous might be able to control the minds of others by focusing their energy. This would be a new and dangerous use of the Miraculous powers that we don't see in the normal series. Also, it could be that some characters have a natural ability to hypnotize, like a hidden power that they discover over time. They could use their own willpower and a special technique, like making eye contact and speaking in a certain tone, to put others into a hypnotic trance.
Well, with endless chakra, Naruto might become more of a target or a symbol of power. His friends could be either more protective or start to feel a bit of envy. For example, Sasuke might have a more complex relationship with Naruto as the power gap between them could widen in a different way than in the original story.
They could practice on small targets first, like animals or inanimate objects. This helps them get a feel for the power and control of their semblance.
In fanfiction, hypnosis can be a powerful tool to change the dynamics between Naruto and Mikoto. If Naruto is hypnotized, he might lose his ability to access his chakra or his ninja skills. He could be made to do things that are against his moral code. Mikoto, on the other hand, under hypnosis could be made to reveal Uchiha clan secrets. The hypnosis could also make her more vulnerable to attacks from enemies who want to take advantage of her weakened state.