256 High-Level Crystal?

Five mythical beasts were summoned inside the vampire's mansion. Yet, for Asarki something was not right, as the difficulty level of this dungeon was not exact with the monsters that existed here.

Growled of the monsters enveloped the entire mansions along with the intense aura released by their bodies. The two adventurers remained in their position, knowing those monsters would surely attack once they complete the summoning.

Why Asarki and Grim didn't attack those monsters while the summoning was ongoing? It had a simple answer, the monsters were invulnerable which means they could not inflict any damages just completely a waste of mana and fatigue.

"Be ready, Grim, we are not facing an ordinary monster. All of them are mythical beasts that means they had so much mana implanted insider their bodies." Asarki explained to him at the crucial moments so this guy would not think to do a reckless idea.