User blog comment:Jopjopjop/Volume 18 Spoilers/@comment-16281343-20140623041636

New spoiler, although not from n0m@n.

"More than defeated. Rizevim denied Yaegaki his revenge and destroyed him before Issei's confrontation. Location? Where knowledge resides.

Rizevim and several dragons attacked heaven. 3 clones of Grendel also arrived, inferior in strength to the real deal. Cao Cao fought one of these clones in addition to Ladon. I believe Kiba, Akeno, Rossweisse, Rias and Koneko fought the other clones. Rias's finisher is now called Extinguisher Star. Also, the return of Shirone mode?

Issei ran into Crom Cruach and Walburga. Dulio helps out.

Asia's four dragons were given these names; Cyril, Simeon, Gregorius, and Anselm.

Weakened by our heroes and outnumbered by Michael's forces, Rizevim left with some very special fruit."