User blog comment:Shaldemar/Prototype: Timeline (Light Novel Vol. 4 until Vol. 9)/@comment-27033694-20161017151335/@comment-27011036-20161018155602

You're talking about 9th Month, 5th Day, right? That is the Kingdom arc, and the only Volumes so far that ever had dates in them. So I have to "backtrack" all the months from there. Maruyama-sama is not really clear in his wordings for time (please see my Foreword). But you made a sounding suggestion there for the Volumes corresponding to months. Thanks for pointing out, I will look into it. Please give me some time to double check it (I have to revise 11 Volumes for it ^_^*)