One interesting plot could be that female Naruto and Sasuke travel back to the time when the Uchiha clan was about to be massacred. They try to prevent it from happening. Female Naruto might use her strong will and unique jutsu to convince the clan members and the village leaders to find a different solution. Sasuke, with his knowledge of the future, could help expose the real mastermind behind the plot against the Uchiha.
Maybe they travel to the early days of the Ninja Academy. Female Naruto, being as energetic as the original Naruto, causes chaos in the classroom. Sasuke is all cool and brooding as usual. They end up changing the relationships of the other students, like making Sakura more confident earlier on and helping Shikamaru be more motivated in his training. Their presence alters the normal flow of events and friendships in the academy.
A possible plot is that they time - travel to a period when a great war is about to break out. Female Naruto and Sasuke have to work together to gather the five great nations and convince them to form an alliance before the war even starts. They use their future knowledge of the destruction war can cause and their skills as powerful ninjas to prevent the bloodshed. They might also encounter versions of their own parents and get to interact with them in ways they never could in their original timeline.
Chapter 381, "You are Liu Suqing's Daughter", is the clearest early answer because it turns Liu Suqing's situation into a concrete plot event. The chapter turns that into something concrete by moving from Yu Tiantian was even more baffled now.
Chapter 132, "Looking at me with that kind of eyes, are you afraid I'll eat you?", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The new girl in the live-streaming room went crazy.
Chapter 106, "The Beginning of the Butterfly Effect", is the clearest early answer because it turns Butterfly Effect Thinking's situation into a concrete plot event. It opens with Thinking of this, He Yun nodded with a hint of anticipation.
Chapter 111, "From now on, Zhao Daniu is my new brother!", is the clearest early answer because it turns Zhao Daniu's situation into a concrete plot event. The chapter turns that into something concrete by moving from The main room's door was pushed open just a crack, and the head of...
Chapter 181, "Are All the Weibo Followers Police?", is the clearest early answer because it turns Wanwan's situation into a concrete plot event. It opens with Xiang Hao rushed to the police station as soon as he saw the trending...
Chapter 429, "Is There Such a Good Thing?!", is the clearest early answer because it turns Zheng Xun's situation into a concrete plot event. The chapter gives readers a real answer by opening on [What's going on?]" "[What happened, why is Team G causing a...
Chapter 14, "She Looks So Cool Dancing with a Gun", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Lin Manru had a rare good night's sleep.. By the end, But clearly, Lin Manru was unable to accept that her delicate....
Chapter 359, "You Know Who I Am and You Dare Speak to Me Like This?!", is the clearest early answer because it turns Liu Suqing's situation into a concrete plot event.
Chapter 49, "Mysticism Girl Jiang Li", is the clearest early answer because it turns Mysticism Girl Jiang's situation into a concrete plot event.