User blog comment:Jopjopjop/Volume 18 Spoilers/@comment-16281343-20140712201724/@comment-24502975-20140712215942

To be honest it made sense, Euclid wouldn't be taken down so quickly. And I think in v17's Afterword Ishibumi hints at if the Sekiryuutei vs Fake Sekiryuutei battle is really already finished or not.

So Crom is on his way to protagonist status later on, and apparently Ladon is sealed in volume 18? Or did you just mistype, jop?

That means they're probably going to revive/reveal Níðhǫggr in volume 19, and Belial's betrayal will probably come to light at that time as well. Not to mention they still have Yamata no Orochi on their side and the clones of Grendel.