Perhaps Sasuke travels to a future time where the ninja world is on the brink of destruction due to a new, powerful enemy. He then has to use his knowledge from his own time to find a way to save the world. This would put him in a situation where he has to cooperate with new generations of ninjas and also face the consequences of the actions in his own time.
One idea could be Sasuke traveling back to the Uchiha massacre. He might try to prevent it, which would completely change the Naruto storyline. This could lead to him having to face off against Itachi in a different context, not as an avenger but as a protector of his family.
Another plot could be Sasuke traveling to a time when the Hidden Leaf Village was first founded. He could interact with the first Hokage, Hashirama Senju, and learn about the origin of the village's power structure and the Uchiha's place in it. This would give him a new perspective on his clan's history and his role in the ninja world.
Chapter 397, "Talent Show Program", is the clearest early answer because it turns Talent Show Program's situation into a concrete plot event.
Chapter 270, "Heavenly God Jiang Yu Returns?!", is the clearest early answer because it pushes Jiang Mingyu into a new phase or setting. The chapter gives readers a real answer by opening on After liking the post, Jiang Mingyu put his phone away and turned...
Chapter 144, "She's Too Bullying!!!", is the clearest early answer because it turns Auntie's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Ordinary people would have been at a loss in this situation by now.
Chapter 217, "No Problem, They're All Red Anyway", is the clearest early answer because it turns Director Sun's situation into a concrete plot event. The chapter turns that into something concrete by moving from But Director Sun didn't plan to give her any room to think, he...
Chapter 33, "Variety Show of Villains", is the clearest early answer because it turns Villains Following's situation into a concrete plot event. It opens with Following the announcement, five artists respectively reposted the...
Chapter 300, "You're retaking the college entrance exam?!", is the clearest early answer because it turns Jiang Zhao Yuan's situation into a concrete plot event. The chapter turns that into something concrete by moving from I dropped out." Jiang Li said calmly.
Chapter 146, "Flying Guest Exposed!", is the clearest early answer because the hidden truth stops feeling like mere subtext. The chapter turns that into something concrete by moving from Director Sun: "???" Jiang Li smiled and said, "In the past, the show...
Chapter 265, "This Time You Must Help Me", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. It opens with As expected, the truth behind the video was unearthed one by one and...
Chapter 191, "Sister, Jiang Cheng is bullying me!", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. The chapter turns that into something concrete by moving from This change made Jiang Cheng extremely uncomfortable.
Chapter 180, "West District Police Station Steps In!", is the clearest early answer because it turns Xiang Hao's situation into a concrete plot event.