Perhaps Fem Naruto travels back in time and teams up with a younger version of Kakashi. Together, they try to save Obito. Fem Naruto uses her female intuition and Kakashi uses his strategic mind. They face many challenges along the way, like dealing with the hidden motives of other ninja clans who might not want Obito to be saved as it could disrupt their own power plays.
One possible fanfiction could be that Fem Naruto uses her knowledge of future events to prevent Obito's fall into darkness. Maybe she travels back in time and intervenes in the moment when Obito witnesses Rin's death. She could use her ninja skills and her unique understanding of Obito's pain to stop him from joining the wrong side.
One possible plotline could be that Naruto discovers a powerful time - travel jutsu. He decides to use it to save his mother Kushina from her tragic fate. Maybe he arrives in the past just in time to prevent the Nine - Tailed Fox attack on the village that led to Kushina's death. He could team up with a younger version of his father Minato and together they fight off the masked man who was behind the attack.
One consequence could be a major shift in the power balance. If Obito is saved, Akatsuki might not be as powerful as it was in the original story. Also, the Fourth Great Ninja War could turn out very differently. With Obito on the side of good, there would be an extra powerful ally, which could lead to a quicker end to the war with fewer casualties.
Maybe in the fanfiction, Obito makes a deal with an enemy that Naruto sees as a betrayal. So Naruto, with his strong sense of loyalty to the village and his friends, decides to abandon Obito. This could lead to a series of events where Obito tries to redeem himself in Naruto's eyes.
One possible plotline could be that Naruto is in a life - threatening battle against a powerful enemy. Gaara arrives just in time, using his sand powers to shield Naruto from a fatal attack. Then they team up, with Gaara's strategic thinking and Naruto's unwavering determination, they gradually turn the tide of the battle.
One possible plotline could be that Kumo is under attack by a powerful and mysterious enemy. Naruto, being the hero he is, hears about it and rushes to save the day. He might use his newfound Sage Mode powers or his ability to connect with the Nine - Tails to fend off the attackers.
One possible plotline could be that Naruto arrives just in time to stop Haku from sacrificing himself for Zabuza. He uses his shadow clone jutsu to create a distraction and then manages to pull Haku out of harm's way. Naruto then tries to convince Haku that there is more to life than being a tool for Zabuza.
Maybe the village is under attack and Ayame gets trapped in the chaos. Naruto senses her distress. He battles his way through the enemy forces, using his Rasengan to clear a path. Once he reaches Ayame, he uses his chakra to protect her from any harm and then safely escorts her to a shelter.
One possible plotline could be that Kimimaro is on a self - destructive path due to his loyalty to Orochimaru. Naruto, being the one who always tries to save his friends and enemies alike, steps in. He might use his talk - no - jutsu to make Kimimaro realize that there's more to life than serving Orochimaru. Naruto could share his own experiences of growing up alone and ostracized, which might resonate with Kimimaro who also had a difficult childhood. In the end, Kimimaro might turn away from Orochimaru's evil plans.
One possible plotline could be that Naruto discovers Kaguya's true past and the reasons behind her actions. He might show her compassion and convince her to abandon her evil ways. For example, Naruto could use his talk - no - jutsu to make Kaguya realize the value of life and the potential for a better future. Then he could save her from self - destruction or the wrath of other powerful enemies.