u/themuffinmanX2

As I'm sure you all now know, the Fortune's Weave Nintendo Direct briefly showed Seteth returning for this game. (Or at least, a character with the same name, appearance, and voice actor. I don't know if it's been officially confirmed but... c'mon.)

I was thinking about that in relation to the ongoing debate on whether Fortune's Weave will be a sequel or a prequel, and realized Seteth may be the only character that can return and maintain that ambiguity.

First and foremost, it couldn't have been any human character. Even if the Dagdan calendar is different enough that it's only been a couple of years since the conclusion of Three Houses, the appearance of someone like Hilda, for a random example, would immediately indicate a sequel, and by how much if their age is provided.

That leaves (as far as I remember) only three character that are either immortal, or at least very long lived. Those three are Rhea, Flayn, and of course Seteth. These three maintain roughly the same appearances over the centuries, and have lived at least a thousand years, before both the construction of Garreg Mach and the defeat of Nemesis.

However, of those three Seteth remains the best option. The developers probably want Three Houses' ending to remain ambiguous, so since Rhea dies in two of the endings, that would either de-canonize those endings or guarantee it's a prequel. Flayn and Seteth meanwhile, survive all four endings (granted this is only if you chose to spare them on the Crimson Flower route, but that's still better odds than Rhea's guaranteed deaths).

However, Flayn has almost the opposite issue to Rhea. Due to her having been unconscious for a very long time before the events of Three Houses, and only waking up shortly before the start of the game, that would limit or disable the plausiblity of a prequel. With these facts in mind, Seteth is more or less the only character that they could have carry over without confirming a date in comparison to that of Three Houses.

Sorry for the rant, I just thought this was interesting and wanted to get my thoughts out.