Well, theoretically in a fanfic world. Naruto's clone jutsu is quite flexible. If we consider the concept of a clone henge into a blackmail book, it might be used for various narrative purposes. Maybe Naruto is trying to deceive an enemy by making them think there is evidence against them in this 'blackmail book' clone. Or perhaps it's part of a complex plan to uncover a conspiracy where the blackmail book holds the key information. It really depends on the creativity and direction of the fanfic author.
A lot could happen. It could be used as a means of blackmail, of course. If Naruto uses this clone - blackmail book to threaten an enemy, the enemy might be forced to do Naruto's bidding. For example, if the blackmail book contains secrets about an evil organization's plans, they would not want it to be made public.
One possible plot could be that Naruto's clone, while transformed into a black book, holds some sort of magical or mysterious power. Maybe the black book has the ability to record secrets of the ninja world, and Naruto's clone has to protect it from those who would misuse the knowledge. This could lead to a series of adventures where Naruto's clone, in the form of the black book, has to outwit enemies and also find a way to return to its normal form.
Kakashi would be quite impressed by Naruto's creativity in using the clone jutsu in such an unorthodox way. He would also be cautious though, knowing that any new and untested jutsu can have unforeseen consequences. His friends from Team 7 would also start to think about how they could incorporate this new form of Naruto's clone into their battle strategies. For example, they could use the black book clone to gather intelligence or as a decoy in a more complex and unexpected way.
I'm not entirely sure specifically what a 'naruto blackmail book fanfic' is about. It could potentially be a fan - created story in the Naruto universe where blackmail is a central plot element. Maybe it involves a character using some sort of secret or compromising information against another character to gain an advantage or force them to do something.
You might be able to find it on some fan - fiction websites. Websites like FanFiction.net or Archive of Our Own (AO3) often have a wide variety of Naruto - related fanfics. Just use their search functions and type in 'naruto blackmail book fanfic' to see if it exists there.
In a Naruto physical henge fanfic, the concept of physical henge can be a great way for character development. Imagine a character who is afraid of heights. They could use the physical henge to transform into a bird and face their fear. Through this experience, they could gain courage and self - confidence. Another way is that a character could henge into an older version of themselves to see how they might develop in the future. This can give them insights into their goals and what they need to do to achieve them. Moreover, characters can use henges to understand different cultures or species within the Naruto world, which broadens their perspective and helps in their development.
One key element is the exploration of the permanent henge itself. How it was obtained, what are its limitations and powers. For example, it could be a result of a forbidden jutsu or a unique encounter. Another element is the reaction of other characters in the Naruto world. Do they see the character as a threat or an opportunity? And of course, the impact on the overall plot of the Naruto - inspired story.
Some characters could be jealous. Hinata might be a bit envious of Naruto's newfound power, but also be proud of him at the same time. She could try to learn from him how to improve her own skills in response to his Solid Henge.
Sure. 'The Hidden Henge' is a great one. It explores unique storylines with the permanent henge concept in the Naruto universe. The characters are well - developed and it has some really interesting twists on the original Naruto plot.
Finally, don't forget about the world - building. The Naruto universe has its own rules and cultures. Incorporate how Naruto's henge mastery fits into this world. For instance, how do other shinobi react to his unique skill? Do they respect it, fear it, or try to learn from him? This will make your fanfic feel more immersive and true to the Naruto world.