User blog comment:B214/Volume 21 info & spoilers/@comment-2.220.207.228-20160301054952/@comment-1359322-20160301161722

Ishibumi just said that Vali may have a minor case of Chuunibyou (Google the term yourself people).

Regarding the cover, Ishibumi thinks that it may be possible for Ise to eventually get his solo cover debut. He's not sure about Kiba yet. Kuroka and Le Fay is probably still far ahead.

And yes he promised that just because the next arc is the last arc, it doesn't mean he'll end it in 1 or 2 volumes. He'll flesh it out thoroughly and try to explore on each heroine again, we're going to get a Kuroka-Koneko sister volume (just my fantasy).

As for how the final arc will expand, if we read Volume 21 we'll be able to somehow guess how the final arc will turn out. We'll also be able to guess what will happen to the DxD-verse after Volume 21.

B214 corner, what do you want to see at the end of Volume 21?
 * A. Post-apocalyptic world
 * B. Separation of friends
 * C. Multiple death of heroine
 * D. Issei's new quest for OPPAI PAWA

Pick one.

Personal thoughts:

Hmm, why only heroines? Explore a bit more on Kiba and Gasper maybe Saji too. I'm sure we'll enjoy it, well maybe only some of us. I definitely wouldn't mind seeing a volume where Kiba brings himself to accept Tsubaki's feelings maybe Tosca and Tomoe too. Or a volume where Saji finalizes his harem with Sona, Momo and Ruruko. Harem to the end Yuuto-kun, Gen-chan!! You don't deserve to call yourselves friends of the Oppai Dragon if you think otherwise.