Not sure if anyone else is following the official site of the author, if not, and you have some basic understanding of japanese, you can head right over to http://usachu.seesaa.net/
To give you a short TL;DR non-moon version, In April 2014 the author posted about their health not recovering as hoped, and that after the short story (33.5) which we saw in the May issue of Comic Alive, they will reluctantly have to put the manga back on hiatus. The author said that while the outlook is better than last time and he wasn't told to 'get 18 months of rest or somesuch', we should still expect a few months before we see any new chapters.
Since then, we saw the 'abriged' electronic version release of the 6 volumes so far. Also, in June 2014, there was another post, with Pro Shiki writing how he's making a grumbly 'umumu~~' face at his health not improving as much as he thought, and how there will be a drama CD released - talk about late, it hit the market with volume 6.
I guess we need to wait patiently and hope.