The nin wolf might be a gift from a powerful ninja in the fanfiction. Maybe as a sign of Naruto's growing power or a new mission he has to undertake. It could also be a wild creature that Naruto tames during his travels.
Kimimaro could be an interesting missing nin character to explore in fanfiction. He was a tool for Orochimaru, but had his own internal struggles. You could write about his life before fully becoming a missing nin, his loyalty to Orochimaru despite his own deteriorating health, and what might have happened if he had broken free from Orochimaru's control. Another character could be Nagato. Before he became Pain, he had experiences that could be considered as leading towards a missing - nin - like existence. His views on peace and his use of the Akatsuki could be delved into in the context of a missing nin story.
Her novels often feature strong female characters. For example, in 'Delta of Venus', the female protagonist's exploration of her own sexuality is central. These characters are complex and not afraid to explore their desires.
Well, without having read '5 nin no ou novel', it's hard to say precisely. But novels often revolve around characters. Maybe these '5 nin' are heroes or anti - heroes. It could be a fantasy novel where they have special powers and are involved in a battle against some sort of evil, or it could be a more down - to - earth story about their daily lives and how they interact with society.
I don't have enough information to determine if '5 nin no ou novel' is popular. It could be a niche novel that has a dedicated but small following, or it might be relatively unknown outside of a certain group of readers.
Another approach is to have a well-paced plot. Start with an exciting introduction, build up the tension gradually, and have a satisfying climax and resolution. Also, incorporate unexpected twists and turns to keep readers engaged.
The nin dog could change Naruto's life by making him more responsible. Since he has to take care of the dog, he'll have to think about someone else's needs. For example, he'll need to make sure the dog is fed, trained, and healthy. This will give him a new sense of purpose outside of his normal ninja training and goals.
I'm not entirely sure specifically what 'neko nin visual novel' is about as there could be many different stories within it. It might involve ninja cats in some sort of fictional adventure or story, perhaps with elements of Japanese culture since 'neko' means cat in Japanese and 'nin' is related to ninja.