Realizing and proving this fact, Caizher then waved his hand and the surrounding extremely abundant death energies moved with his will. The area around Caizher or more like every part of the Underworld is filled with the endless energy of death but an area devoid of even a single drop of that energy actually appeared!
With Caizher being the darkness itself, he can easily control any things related to darkness including death itself as long as he continuously grew his power
The ghosts with low intelligence only thought that something was weird but they didn't think much of it and they just continued attacking Caizher
With another wave of Caizher's hand, the birds' bodies exploded as he controlled the remaining energy of death inside these birds. The birds didn't even leave any corpse as they don't even have one in the first place. Only their spirit which is technically their bodies remained but even that was fully destroyed by Caizher