Mémoire céleste

The characters' journey feels so rich and layered, but I wonder what motivated the author to keep expanding their story across multiple books. Was it planned from the start or did the characters take on a life of their own?

The descriptions of 18th-century life are so vivid that they draw you in, but at times I found myself wishing for a bit more pacing. Was this level of detail intentional to build the world, or did it evolve during writing?

The love story is so central, but the historical conflicts add so much tension. I'm curious how the author approached balancing these elements to keep the story engaging on multiple levels.