Well, I've checked the Artists and it seems the other two(Setadou and BORDERLINE) besides Personal Color is not drawing doujins anymore as far as I can tell. Both of them seems to have stopped posting on their blogs for about 6 years now(including their new websites).
I also tried to searching for their pixiv/twitter accounts and the both doesn't seem to have one, so there's goes any chance that we can check if they're even still making doujin artwork or if they're even alive. So sadly, I think it's possibly high that the series has been dropped rather being in a hiatus.
last edited at Dec 5, 2016 3:45AM