Perhaps the fanfiction focuses on the wanderer's search for the true meaning of immortality. Along the way, he could have deep philosophical discussions with Naruto and other characters about life, death, and the purpose of power.
One interesting plotline could be the immortal wanderer's encounters with different villages in the Naruto world. He might share his unique knowledge and skills, which could change the power dynamics in those villages.
One interesting concept could be Naruto's 'godlike' powers. Maybe he has abilities far beyond his normal ninja skills, like the power to manipulate time or space. This would completely change the dynamics of the Naruto universe and his interactions with other characters.
There could be other characters like Sasuke as well. Sasuke's quest for power and his complex personality might bring him into contact with the immortal wanderer. Maybe he sees the wanderer as a threat or a source of knowledge, which would make their interactions an important part of the fanfiction.
Well, it depends on the specific fanfiction. Some might have Naruto going on new adventures in different lands as a wanderer, facing unique challenges and making new friends or enemies along the way.
One possible plotline could be that Naruto discovers a hidden jutsu or artifact that grants him immortality. He then has to deal with the consequences of living forever, like seeing his friends and loved ones age and die while he remains the same. Another could be that an enemy tries to steal his immortality, leading to a great battle.
A possible plotline is Naruto using his unorthodox methods to solve ANBU - related problems. His creativity and ability to think outside the box could lead to new strategies for the ANBU. He might come up with a new way to gather intelligence or take on a powerful enemy that the traditional ANBU methods couldn't handle.
One interesting plotline could be Naruto using his unique experiences as a former student to develop new and unorthodox teaching methods. For example, he might incorporate his own journey of learning difficult jutsus into his lessons, making it more relatable for his students.
One interesting plotline could be Kaguya's return and her attempt to make amends for her past actions. Naruto, being the protagonist, could be the one to help her in this journey of redemption. This would show a different side of both characters and how they grow together in this new situation.
Another plotline could be Tsunade's role in rebuilding the village after a major battle. It could show her leadership skills, her decision - making process, and how she works with other characters to bring the village back to its former glory. This would involve aspects like rebuilding infrastructure, training new ninjas, and restoring the village's economy.
Perhaps Naruto discovers a new medical jutsu that combines his chakra control with traditional medical knowledge. This could revolutionize the medical field in the Naruto universe. He might use it to heal previously incurable diseases or injuries, and in the process, gain the respect of the medical community. This could also lead to some interesting interactions with other medical ninja, like Shizune or Tsunade.
One interesting plotline could be Naruto dealing with the complex political landscape of the Hidden Leaf as an adult. He might have to make tough decisions regarding alliances and the future of the village.