I can confidently say that Book and Nook do offer light novel collections, though the selection varies. Book tends to have a broader range, including popular titles like 'Sword Art Online' and 'Re:Zero', while Nook often focuses on newer releases or niche gems like 'The Apothecary Diaries'.
What’s great about Book is their curated sections for translated works, making it easy to find classics like 'Spice and Wolf' or newer hits like 'Konosuba'. Nook, on the other hand, sometimes surprises with limited-edition releases or exclusive digital bundles. If you’re into isekai or fantasy, both platforms have solid options, though Book’s interface makes it easier to discover hidden treasures. For romance-focused light novels, Nook’s recommendations are surprisingly on point, with titles like 'Toradora!' and 'My Youth Romantic Comedy Is Wrong, As I Expected' frequently popping up.