Board Thread:General Discussion/@comment-18053181-20141214100556/@comment-35248429-20180810235003

Unless a major change is made during progressive like Sachi not dying or something everything afterwards remains largely the same. The first two volumes really covered a two week period and a few days here and there. And some major story beats in the main series like Laughing Coffin are clearly already present in Progressive.

Also it's not true that Kawahara is just cleaning up the web novel material anymore. The series have been rewrites since Volume 6.