One common scenario is Naruto using his girl - like appearance for undercover missions. He might pretend to be a girl to gather information in a place full of bad guys. Another is that he gets mistaken for a girl by new characters he meets, which leads to some funny misunderstandings at first. And sometimes, there are scenarios where he has to participate in a beauty contest or something similar because of his appearance, which is really out of his comfort zone as the original Naruto.
A frequent scenario is that Naruto's friends start to treat him differently when he looks like a girl. They might be more cautious around him or try to protect him more. Also, there could be a scenario where Naruto is kidnapped because the kidnappers think he's a valuable girl. In some fanfics, there are also situations where Naruto has to deal with unwanted suitors because of his appearance, which is a completely new situation for him compared to the original story.
One possible scenario is when Naruto travels back in time in the fanfiction. He might end up looking like Minato as a result of some time - traveling magic or jutsu side - effect. This could lead to all kinds of interesting situations, like his friends not recognizing him at first.
Often, in fanfics, when a powerful or secret technique is misused or goes out of control, Naruto is made the scapegoat. Since he's often associated with powerful and sometimes unpredictable jutsu. Also, if there are political power plays within the Hidden Leaf Village, Naruto can be used as a scapegoat to shift the blame from the real culprits. For instance, if a new policy is not well - received, the higher - ups might pin it on Naruto to save their own reputations and keep the peace among the villagers.
It can change the story plot in many ways. If Naruto looks like a girl in the fanfic, it might attract different kinds of antagonists. Maybe some villains who target women specifically would come after him. Also, his role models like Jiraiya might treat him differently. Jiraiya might not be as comfortable training him in the same way as he did in the original story. This would then force Naruto to find new ways to grow as a ninja, thus altering the plot.
One common scenario is that the villagers immediately recognize Naruto's potential and start to support his ninja training. For example, they may provide him with better resources or training facilities. Another could be that they openly show their affection for him, like inviting him to community events as an equal rather than shunning him.
One common scenario is during big battles. He uses his healing powers to keep his teammates alive and fighting. Another is when he heals villagers who are injured in attacks. Sometimes he might use it to heal enemies too, as a way of showing mercy and trying to end a conflict.
One common scenario could be that his family has some sort of dark secret. For example, his father might be involved in something evil that Naruto discovers, leading him to hate his family. Another scenario could be that his family has been neglectful of him. In the fanfic, Naruto might have grown up feeling unloved by his family, which causes his hatred.
One common scenario could be when he's undercover. Maybe he has to dress up as a girl for a mission and then people outside of the mission who don't know the truth mistake him for a real girl. Another could be that his long hair (if he has it in that fanfic) and delicate features make people assume he's a girl at first glance.
It could be just for the fun of it. Writers often like to play with the established characters and create unique scenarios. In this case, seeing strong Naruto in a girl - like form can lead to humorous situations, like when his friends first see him and their shocked reactions. Also, it can open up new plotlines, such as Naruto having to disguise himself as a girl for a mission and having to navigate the situation while still being his strong self.
One common plotline could be Ash having to disguise as a girl for a mission or competition in the Pokémon world. For example, he might enter a beauty - related contest that only allows female participants.
Often, there could be a situation where Naruto has some sort of mental setback. Maybe he forgets all his skills and knowledge, and as a result, the people around him start treating him as if he were a baby. They would then have to reteach him basic things like walking and talking in a ninja - context.