continues right where left off with Cloud and his group having left Midgar. At least, in the main timeline, that's where the group starts off in this section of the trilogy. But with the existence of multiple timelines, and more being created with even the smallest choices, the story can get a bit confusing, especially when it looks like some characters have varying levels of awareness of those alternate timelines.
[Warning: The following article contains spoilers for Final Fantasy 7 Rebirth.]
There's an overall theme among the main characters about fighting Fate and taking their future into their own hands, leading to battling Sephiroth and the Whispers that seem to follow him. However, it looks like most characters aren't aware of the alternate timelines that exist alongside their own, and that the decisions they make continue creating more. That means the true fight against Fate is in the hands of those capable of interacting with multiple timelines, letting them see other possible futures.
There are two types of Whispers in: Dark and Light. Of these, Dark Whispers are seen far more, and they take more drastic actions to adjust the primary timeline. However, it seems likeSephiroth has some level of control over at least a portion of Dark Whispers, which makes it tough to figure out how many of their actions are due to keeping the timeline in check versus how many are due to Sephiroth’s will.
Although they aren't seen as often, there are Light Whispers as well. These don't seem to be under the control of Sephiroth, but they also look more willing to change the set Fate of the original timeline, which is seen when they lead Zack to help Cloud fight Sephiroth. It's difficult to tell what their motivation is, but at the very least, they don't seem to agree with Sephiroth's plan or his use of the Dark Whispers. The effects of their actions also sometimes have white feathers falling into the area, which is the opposite of black feathers that are related to
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