User blog comment:Xhatefate/DxD Updates~/@comment-6500068-20150310070845/@comment-16281343-20150310114957

No. What I'm saying is they're finally trying to animate the short stories published in Dragon Magazine. Unlike the previous three OVAs that were written by Ishibumi specifically for the anime.

The events in short stories published are often referenced or have a role in the main story while the three OVAs doesn't.