Perhaps there could be a plotline where Naruto discovers the origin of this 'demon' within him. It could be related to some ancient prophecy or a long - forgotten jutsu. As he delves deeper into this mystery, he uncovers secrets about his family and the Hidden Leaf Village that were previously unknown.
Another plotline could involve how Naruto's relationships change. For example, his friendship with Sasuke might be affected as Sasuke could be either more wary or more intrigued by Naruto's new 'demon' aspect. His relationship with his teachers like Kakashi might also shift as they try to help him manage this new power.
One possible interesting plotline could be the exploration of a new power that the main character discovers, which is a result of their strong will. This power might set them on a journey to change the Naruto world in unexpected ways.
One interesting plotline could be the exploration of the Demon of the Mist's backstory. Maybe it reveals how the demon came to be associated with the Mist Village in the first place. Another could be a story where a character has to face the inner demons inspired by the Demon of the Mist and overcome them through self - discovery and growth.
Maybe a plot where Naruto, through some magical accident, gets transported to a world full of demonesses who all see him as a potential mate. He then has to use his ninja skills and his kind heart to navigate this new world and the complex relationships within the harem. For example, he might have to fight in some demon battles to prove his worthiness to be in the harem.
One interesting plotline could be Naruto struggling to control his new wolf demon powers. He might accidentally lash out at his friends, creating a rift between them until he learns to master his abilities.
One possible plotline could be Naruto's inner struggle with his new 'demon' side while still maintaining his love for Hinata. Maybe his demon powers make him more protective of her in a way that's different from his normal self.
One interesting plotline could be Edward exploring his unique vampire abilities from birth. For example, he might have a different way of controlling his thirst compared to other vampires. Maybe he has an innate power that helps him resist the urge to hunt humans more effectively.
One possible plotline could be Percy's struggle to adapt to his new godly status. He might face challenges in understanding and controlling his new powers.
One possible plotline could be Percy's journey of learning to adapt to his blindness. For example, he might discover unique ways to sense his surroundings, like using his other senses more acutely. Another could be how his friends and family support him through his challenges. Maybe his friends help him navigate the world around them, or his family gets him special training to help him be more independent.
A possible plotline is that Natsu's dragon form attracts the attention of dark wizards who want to use his power for evil. So he has to fight against them while also coming to terms with what it means to be a dragon. He may also have to deal with the physical and mental changes that come with this transformation, like different instincts and a new way of seeing the world.
One possible plotline could be the main character's struggle to control the new demonic powers while still maintaining their sense of self. For example, they might have to deal with sudden outbursts of power that attract unwanted attention in the Naruto world. Another plotline could involve the character's relationships changing. Their friends might be scared or suspicious of them at first, but over time come to accept and even rely on their new powers.