User blog comment:B214/Volume 17 spoilers./@comment-23853100-20140220152640/@comment-1359322-20140221005021

Grendel was hit by all the attacks from the entire ORC including Azazel and Dragon Slayer attacks as well as the Extinguished Star and yet he was only damaged half of his face, then this Volume he gets defeated by Issei and Sairaorg only. You think it's possible, yeah Sairaorg is powerful, but able to hold back Grendel so easily. Sounds way to forced.