It could also be that she is acting on behalf of the village. Naruto is important to the village of Konoha. Anko, as a part of the village, realizes his significance and is protective to ensure the safety and well - being of the village as a whole, because Naruto is a key figure in its future.
Perhaps Anko has a personal connection to Naruto. Maybe she sees a bit of herself in him, like his determination in the face of difficulties, and this makes her feel a sense of kinship and thus the need to protect him.
Anko might show protectiveness in the Naruto fanfiction by physically defending Naruto when he is in danger. For example, if Naruto is being attacked by enemies, Anko could jump in and use her skills to fend them off.
One possible reason could be unrequited love. Maybe Naruto has deep feelings for Anko, but she doesn't feel the same way. She might be focused on other things like her ninja duties or she could have feelings for someone else. Another reason could be that Anko betrays Naruto's trust in some way. For example, she might break a promise she made to him that was really important. It could also be that Anko does something that goes against Naruto's ideals, which makes him feel heartbroken as he had a different image of her in his mind.
One reason could be that he sees Naruto as a younger version of himself in some ways. Both have had their share of loneliness and challenges growing up. Kakashi may want to prevent Naruto from going through the same pain he did. Another reason is Naruto's importance to the village. As the jinchuriki of the Nine - Tails, Naruto is a key asset. Kakashi, being a loyal ninja, wants to protect the village's future which is tied to Naruto.
One possible reason could be a misunderstanding. Maybe Anko was involved in a mission that Naruto thought was unjust, and he misjudged her actions as being malicious. For example, if she had to capture someone Naruto considered a friend, even if it was for the right reasons from Anko's perspective, Naruto might hold a grudge.
Maybe she loves the Naruto world so much. The unique characters, like Naruto himself with his never - give - up attitude, and all the different jutsus and storylines in the original Naruto series make her want to explore more in fanfiction.
One possible reason could be a miscommunication between them. Maybe Anko feels neglected and then strays. Another reason might be that the writer wants to create a more complex and angsty plot.
One main reason is the emotional connection fans have with Naruto. The fanfiction is an outlet for that. So, they are protective. Another reason could be the creativity involved. Writers put a lot of effort into these stories, and fans want to safeguard that creativity. Also, Naruto has a distinct world - building, and fanfiction adds to it, which fans cherish and protect.
One possible reason could be a misunderstanding. Maybe Anko thought Naruto was involved in something dangerous or against the village rules without having all the facts. For example, if there was some sort of strange activity in the village and Naruto was in the wrong place at the wrong time, Anko might jump to conclusions and attack him.
One reason could be that she has seen his courage and selflessness. Harry is known for his heroic deeds, and Daphne might admire these qualities and thus want to protect him. Just like how people often feel the need to protect those they look up to.
One challenge could be the reaction of the village. Since Naruto is a well - known figure, the news of him impregnating Anko might cause a stir. There could be rumors and gossip that they would have to deal with.