Sasuke could be a likely candidate. He has always been Naruto's rival, and if he sees Naruto teaming up with Kaguya, who was once a great threat, he might oppose them. He may suspect that Kaguya has some ulterior motive and that Naruto is being naive in trusting her.
Another plot could be that both Naruto and Kaguya are sent back in time together accidentally. They end up in a time when the ninja world was just beginning. They have to work together to survive in this primitive world, and in the process, they start to understand each other better. Naruto tries to teach Kaguya about the concept of friendship and loyalty, which she has long forgotten. As they face various challenges, their relationship evolves, and they may even find a way to change the future for the better.
When Naruto absorbs Kaguya in the time travel scenario, it's likely to cause chaos. His understanding of chakra and the world around him would be completely transformed. He may be able to access new dimensions or abilities that were previously unknown. However, this could also attract the attention of dark forces or ancient evils that were previously dormant, forcing Naruto to deal with threats he may not be fully prepared for.
Well, it could completely change the course of the story. For example, if Naruto travels back in time, he might be able to prevent certain events that led to Kaguya's power becoming so dominant. He could also use his knowledge of future events to train himself or others more effectively, thus altering the power balance in the ninja world much earlier.
Well, one possibility is that Naruto could use his newfound power of absorbing Kaguya along with the time travel ability to prevent some of the major tragedies in the Naruto universe. For example, he might stop the Uchiha massacre, which would change the entire course of the story. It could also lead to a different relationship between Sasuke and Naruto, as Sasuke's motivation for revenge would be gone.
There are. A lot of these fanfictions play with the idea of time travel as well. Maybe Naruto goes back in time and meets Kaguya before she becomes the all - powerful enemy. This changes the course of history and their relationship. It's a really fascinating concept that many fanfiction writers like to explore.
Sakura could also be included. She is a strong and independent character. Her medical skills would be useful in the harem, and her relationship with Naruto, which has evolved over time, could add an interesting dynamic to the group.
Well, Naruto x Kushina time travel fanfiction often delves into themes of family and destiny. The idea of Naruto going back in time to meet his mother is quite appealing. It can lead to some emotional moments, such as when Naruto finally gets to experience a mother's love in a more direct way. Writers can also play with the concept of changing the past to shape a better future for the ninja world. There could be epic battles where Naruto and Kushina fight side by side, using their combined powers to face threats that were previously insurmountable.
Well, Naruto could change Kaguya in the fanfiction by introducing her to the concept of redemption. Given his own journey of facing his inner demons and coming out stronger, he might convince Kaguya that she can atone for her past sins. He may take her on a journey through the ninja world, showing her how people have rebuilt and thrived despite the chaos she once caused. This could make her re - evaluate her actions and change her perspective on the world and her place in it.
One common theme is power dynamics. Since Kaguya is extremely powerful, fanfictions often explore how Naruto, with his own considerable strength, interacts with her. Another theme is redemption, as mentioned before, where Naruto tries to redeem Kaguya. Also, there's the theme of forbidden love because of their very different natures and the fact that Kaguya was once an enemy.