The sky was overcast and dark. 

On a huge mountain filled with the thick air of corruption, strange whispers echoed throughout the forests. 

BOOM!

A shockingly huge wave of energy rippled from the depths of the mountain. Like a hurricane sweeping by, the whole mountain started shuddering under the undulations of the immense energy waves.

Upon closer look, there was a True Devil Other howling on a peak of the mountain. Viscous and eerily cold corruption gushed out of it continuously, blanketing the whole sky.

The Other was preparing for battle at this point. Its flesh started to rip apart and pieces of its white bones punctured its skin from inside. In the next moment, the white bones separated from its body and transformed into white-bone swords. The swords were dripping a black substance that was dark as ink and contained the fearful power of corruption. 

This was none other than the Bone Sword True Devil.

Its body was fully covered in white-bone swords....