One interesting plot point could be Naruto getting a chance to redo certain battles with new knowledge and skills, leading to different outcomes. For example, he might be able to save more comrades in battles that originally had casualties. Another could be his relationships evolving differently. Maybe he forms closer bonds with some characters earlier or resolves past misunderstandings more quickly.
One idea could be to have Naruto start his journey with the knowledge he gained in the original series. For example, he could immediately focus on training in new jutsus that he knew were powerful later on. Another idea is to change the way the main characters interact. Maybe Naruto and Sasuke start as friends right from the beginning without the initial rivalry. Also, a 'Naruto Restart' fanfiction could explore what would happen if Naruto was trained by different people in the village instead of just Iruka and Kakashi at first.
A third concept could be a change in the power system. Instead of the traditional chakra-based powers, there could be a new form of energy or a different way of using chakra. This would completely change the dynamics of fights. For instance, Naruto could discover a new way to combine his Nine - Tails chakra with a different type of energy, making his attacks more powerful and unpredictable.
The power - up scenarios are also fascinating. Naruto might learn some new abilities from the Adventure Time world, like using the power of the Candy Kingdom's magic in his jutsus. And in reverse, he could teach Finn and Jake some ninja techniques, which could change the power dynamics in their world.
One interesting plot point could be Naruto's struggle to fully understand and communicate with the Kyubbi. It's not just about using its power, but really having a connection with it on a deeper level.
Obviously, Naruto would be one of the main characters as it's his restarted adventure. Sasuke would also likely play a major role, as their relationship is a central part of the original Naruto story. Sakura might also be a main character, perhaps having a different role in Naruto's new adventure, like being more involved in his strategic planning or having a more developed fighting style.
Well, a cool plot for Naruto adventure fanfiction might be that Naruto discovers a hidden village of ninjas who have unique and never - before - seen powers. He has to convince them to join the Allied Shinobi Forces to fight a new and powerful enemy. Also, you could have a story where Naruto gets transported back in time to the era of the Sage of Six Paths and has to learn from him directly to become stronger and change the future. And, how about a plot where Naruto is on a mission to rescue all the tailed beasts that have been captured by an unknown organization?
The discovery of hidden feelings. When drunk, Naruto or Sakura might accidentally reveal their true feelings for each other. Maybe Naruto has always had a deeper love for Sakura than he let on, and in his drunken state, he confesses. Or Sakura, who has always seen Naruto as a friend, realizes that there is more to her feelings when she's drunk. This could be the start of a new chapter in their relationship.
Perhaps a key plot point is when fem Naruto uses her mermaid abilities to save the village. Since mermaids are often associated with water, she could control a massive flood or something water - related that was threatening the village. And also, the reactions of the other characters, like Sasuke or Sakura, when they find out about her being a mermaid would be really interesting.
One interesting plot point could be how Naruto, now in Shikamaru's body, uses his newfound intelligence in a different way. He might strategize battles more like Shikamaru but with his own Naruto - like determination. For example, in a fight against a powerful enemy, he could combine Shikamaru's shadow jutsu with Naruto's never - give - up attitude to outwit the foe.
One interesting plot point could be the different relationships between characters in the future. For example, how Naruto's friendships might have evolved or changed over time. Maybe his bond with Sasuke has deepened in unexpected ways. Another could be new ninja techniques that are introduced, which might be a result of the characters' continuous growth and innovation in the fanfiction world.