Das geheime Prinzip der Liebe

The shifting viewpoints added layers of mystery, but I wonder if it was planned from the beginning or developed during writing. Did it help build suspense?

The characters' hidden pasts made me question who to trust, but also made me sympathize with their struggles. How did others interpret their motivations?

The backdrop feels so vivid and integral to the plot — I'm curious whether the author had a personal connection or did extensive research to craft it.