Final Fantasy VII Remake - Traces of Two pasts

The game already has a rich narrative, so I wonder what guided the choices to include new scenes or details in this novel. Did fan feedback influence these additions?

The way the novel explores their pasts and motivations added new layers. I’m curious if others felt as invested as I did in these minor details.

Given the interactive nature of the game, I wonder how the author approached adapting it into a narrative that still captures the game's spirit and pacing.