Talk:Natsuki Subaru/Synopsis/@comment-120.147.1.36-20161119115409/@comment-4436931-20161119123527

Yes, the light novels are an adaptation of the web novel, however the side stories you mentioned, Crusch/Fourier and Wilhelm/Thearesia, are from the Re:Zero Ex volumes, which is a combination of stuff the author wrote and some short stories about the topic, though in Wilhelm's case his backstory is also explained in the main story