In this fanfic, perhaps Naruto eats the Shinju as a last - ditch effort to save his friends. This act could then lead to a whole new adventure where he has to explore the origin of the Shinju and its connection to his ninja world. He might also face opposition from those who don't understand his actions.
The fanfic could revolve around Naruto being tricked into eating the Shinju. He then discovers that the Shinju has a consciousness of its own and he has to form a sort of partnership with it. This could involve Naruto learning new jutsu that are related to the Shinju's power and using them to protect the Hidden Leaf Village from new threats.
Well, it could be about Naruto obtaining some strange power from eating the Shinju. Maybe he does it by accident in a battle and then has to deal with the unexpected consequences, like new abilities that are hard to control.
Well, one possible consequence could be that he gains some sort of super - power. Since the Shinju is a very powerful and mysterious entity in the Naruto universe, consuming it might endow Naruto with abilities beyond his normal limits. Maybe he could gain control over new types of chakra or even have a better understanding of the origin of all things in the ninja world.
He might be desperate. Maybe there is a great threat to the ninja world that can only be defeated by the power of the Shinju. Naruto, being the hero he is, decides to take the risk of eating it in order to gain the power needed to save everyone.
If Naruto eats the Shinju, it could greatly disrupt the balance of power in the Naruto universe. His newfound power might make him a target for those who seek to control or destroy such power.
If Naruto eats the Shinju fruit in fanfiction, it's possible that he would inherit some of the unique powers associated with the Shinju. For example, he might be able to manipulate nature in ways that were previously unimaginable. His connection to the world around him could deepen, allowing him to communicate with animals or plants more easily. This could also lead to a shift in his relationships with his friends and allies, as they would have to adjust to his newfound powers.
In the 'naruto inside the shinju fanfiction', it's possible that Naruto enters the Shinju by accident. Once inside, he might encounter different chakras or energies that are unique to the Shinju. He could start to understand how the Shinju is related to the overall balance of the ninja world. Maybe he has to team up with some unexpected allies that he meets inside the Shinju to solve a problem that not only affects him but also the outside world.
Perhaps in the fanfic, the Shinju has a consciousness that has been dormant for a long time. A ninja accidentally awakens it and has to deal with the consequences. The Shinju could have its own goals and desires that conflict with the ninja world's current state. This could lead to a story of negotiation, understanding, and ultimately, a new way of coexisting between the Shinju and the ninjas.
Naruto himself could be the main character in a Shinju fanfic. He has always been about finding new ways to bring peace and understanding. His connection to the nine - tails could play an interesting role if he were to interact with the Shinju. Maybe he could try to convince the Shinju that the ninja world has changed and it doesn't need to be a source of fear and destruction.
Perhaps in the 'naruto eats souls fanfiction', Naruto is cursed by an evil force. This curse makes him uncontrollably eat souls. He then has to struggle to find a way to break the curse while dealing with the consequences of having eaten souls, like the anger of the spirits' friends or families.
Well, perhaps a fanfic could revolve around a Shinju - influenced character from Naruto coming to the DxD world and starting a school for both ninjas and devils/angels/fallen angels. They teach the DxD characters about chakra and how to use it in combination with their existing powers. In return, the DxD characters teach the Naruto - style character about the different social and power hierarchies in their world. This would lead to a lot of interesting interactions and potential for both comical and serious storylines.
One interesting plot twist could be that the Shinju reborn Naruto has memories of past events related to the Shinju that no one else knows about. These memories could lead him to discover hidden places or secrets that change the course of the story. Also, there could be a twist where the power of the Shinju within Naruto starts to corrupt him, and he has to struggle to keep his true self while dealing with this new and powerful force inside him. This could lead to some really emotional and intense moments in the fanfic as his friends try to save him from the corruption.