User blog comment:B214/High School DxD BorN episode 1 review/@comment-16281343-20150407224228

Since we're already halfway to the second episode, might as well say this.

There are already reactions, some good some bad, about how things are rearranged in Season 3. Well, there will be more rearrangement. So, this will be a heads up/reminder.

EVENTS FROM VOLUME 7 PARTICULARLY AKENO'S PAST AND BACK STORY FOR THE NORSE MYTHS WILL BE INCORPORATED IN VOLUMES 5 AND 6.

Unlike past seasons where the whole thing is partitioned into two i.e
 * episodes 1-5 - Volume A
 * episodes 6-12 - Volume B

, Season 3 will not follow that because we'll have 3 Volumes. Having 12 episodes and dividing them into three would be DISASTROUS.

What they will do is have events that I mentioned included in the earlier episodes so that the story for Volume 7 would be built up and not dedicate another episode for it. This will leave the rest of v7 with more episodes left to wiggle with.