Hmm
I don't know, the way I see it is that we'll just see who are going to be the characters, the party of two or maybe even three, the bonus storyline will be about and then the scene, likely that's why we can't have any previews because just by any sight of one character being with another character that might not be Sophia will lead to having an idea of what the bonus storyline will be about and spoil the surprise. However, that doesn't say or hint that the bonus storyline might have a continuation in future updates though it doesn't say that it'll be conclusive of just that scene on that particular day and that's it either.
Damn, we need the update soon, we're starting to overthink things again! haha.