One similar novel could be 'The Book Thief' by Markus Zusak. It also has a historical setting during World War II and delves deep into the lives of its characters against the backdrop of a war - torn world. The narrative style is engaging and the themes of humanity, love, and loss are explored in a profound way.
Sure. 'All the Light We Cannot See' is considered historical fiction as it explores and fictionalizes aspects of real historical periods and events to tell its story.
Definitely not. 'All the Light We Cannot See' is a complex and multi-layered story that incorporates history, war, and human experiences rather than focusing primarily on romance.