A plot twist in such a fanfiction could be that Eren travels back in time and gets stuck in a loop. Every time he tries to change something, it just resets and he has to relive the same events over and over again. He might also find that the power to travel back in time is not unique to him. There could be other characters from different timelines or dimensions who also have this ability and are trying to manipulate events for their own gain. This could lead to a complex web of power struggles and alliances as Eren tries to figure out who to trust and how to break the loop and save his world from the Titans.
Well, a really interesting plot twist in an Eren travels back in time fanfiction could be related to relationships. Say Eren goes back and realizes that his actions in the past have a huge impact on his relationships with his friends. Maybe he accidentally causes Mikasa to not be as attached to him as she was in the original timeline. Or he could find out that Armin was supposed to be the one with the time - traveling ability all along, and his interference messes up Armin's future plans. Also, what if he goes back and discovers that the real enemy wasn't the Titans but some other force that was using the Titans as a distraction, and his time - traveling journey is the only way to expose this truth.
Chapter 910, "This place isn’t fun, I want to go home!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 843, "Why the Sudden Change of Heart?!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. Early on, Uncle Zhao also expressed that they did all this for money.. By the end, Gu Yu is my real grandson;
A practical answer is Chapter 14, because it turns the idea into a concrete scene. The chapter opens with Lin Manru had a rare good night's sleep., adds pressure through The young, vibrant life was buried amid the vast expanse of white, along..., and ends on But clearly, Lin Manru was unable to.
Chapter 778, "The Gift of Being a Director", is the clearest early answer because it turns Shiguang's situation into a concrete plot event. Early on, Shiguang, I really misjudged you, you're actually this kind of....
If you want the clearest chapter reference, go to Chapter 52. Early on, The village chief and the woman behind him exchanged a glance, "This...; later, the chapter leans on might not be a good idea, you guys are still filming, we don't want to....
If you want the clearest chapter reference, go to Chapter 26. Early on, Shen Lan was bent over processing a large stack of press briefs on her...; later, the chapter leans on She was nearly forty years old, but because she took good care of herself....
Chapter 859, "I Bet She Won't Last Ten Minutes!", is the clearest early answer because it turns Shuiyun Mountain's situation into a concrete plot event. It opens with All morning, the two little ones were quiet, not making a peep, even...
If you want the clearest chapter reference, go to Chapter 21. Early on, Jiang Li's clear and logical explanation had everyone stunned in place.; later, the chapter leans on Jiang Yan had wanted to defend Su Yinwan since his sister's temper in the....
Chapter 839, "Because There's a Good Show to Perform", is the clearest early answer because it turns Western's situation into a concrete plot event. The chapter gives readers a real answer by opening on But don't worry." Gu Qiang said, holding Shi Lei's hand, "The...
Chapter 31 is the strongest chapter-level answer because it starts from Before Shen Lan had reached the backyard, she already heard the sounds of... and follows through on After staying in the study and reading for another day, she finally....