Upon the second realm darkness bullet spell left Blake's hand and shot straight forward, right into the direction of the dark earth dome that confined the muscular humanoid demon, the force that shook all the nether in the environment doubled.
Starting from the wall of dark flames that were less rigid than the darkness barrier that came from a rune formation, the walls that supposedly contained Blake, Cyra, and the muscular humanoid demon inside began falling apart as the nether that made them up had utterly lost the bonds they had with each other.
As if something forcefully broke their bonds, there weren't any flashy events, just the dark flame wall suddenly shook violently before completely disappearing out of existence.
The same thing also happened with the darkness barrier that Blake put up outside the dark flame wall, but it took some more time and several huge cracks before the whole thing also crumbled down.