User blog comment:Bastian77/OVA5 Subbed Version Out!/@comment-5105419-20130620130318/@comment-15267891-20130621015228

The manga needs at least a few more months to provide enough material for the anime. From my observation, 3 manga chapters can fit into 2 anime episodes. And if the anime resumes, maybe after a few more months, for a long time it can go on without needing some filler arc.