I'm glad the last pages were included. Well, they could've been at the end of every chapter and I'd have been fine but including them in the beginning and "end" is definitely the best way.
With the flashbacks/retcon, it's a bit weird for Sayo to ask this now when they've been doing all manner of tomfoolery back in their heyday. A more fitting consternation would be she angsting over lost time and "will this love be the same one we once shared?" or smth idk