User blog comment:B214/General discussion/@comment-45.114.233.190-20171120130339/@comment-31552453-20171120170312

Okay. So yes, the manga will be ending in December. When it ends, it will have covered the first 4 Volumes of Rakudai. Currently, there are 13 Volumes. So yes, there is a lot more information, as the manga does not even include the Seven Stars Sword Art Festival.

The reason for the manga ending is most likely either due to lack of sales or due to this just being a good place to stop before the Light Novels end. If they were to continue at their current pace, the Novels would probably end before the manga finishes the Seven Stars Sword Art Festival.

Hope that clears some of this up. :)