The dark aura around Akai grows stronger as his mask is completed. He slowly walks towards the shinigami, holding his Zanpakuto by his side, his head hung low. No words are uttered, no special techniques used. An enemy shinigami rushes him; he grabs the frenzied enemy, and swiftly, vehemently, impales his torso. The blade is not removed the same way it is inserted; Akai slashes upward, turning the shinigami corpse into a mutilated fountain of blood.
Other shinigami foolishly surround him. Only one word is uttered, in a warped, cold voice:
"Despair."
Akai does not move as his blade is consumed by black sakura petals. The fabric of space and time around him seems manipulated, changed into something much more dark, grim and morose. Half of the remaining shinigami commit suicide. The remaining fall to their knees. Some beg for mercy, some beg to be slain. Others merely shed tears.
"Thank you," Akai gently says, as the hollow aura around him fades. "You have always been kind to me." Akai removes the mask, which comes off without struggle. He affectionately glances at his bloodied Zanpakuto, then looks at his inner hollow's work as a discreet smile appears on his face. He places the mask back into his hakama. His Zanpakuto's aura remains.
"Do not cross me further, my old comrades. Batsu's last words will have no effect on this day."