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

The Sword Art Online - Progressive light novel series are a reboot of the original, and therefore set in a seperate continuity, meanwhile the original series is still ongoing then why did the author continue writing more books more the original series while also writing more rebooted versions of his previous SAO books? What is the purpose of the Progressive series, when there's already an on-going original light novel series? 