Each with a Backup Move

Azure Phoenix Divine Empress battled the seven Nine-eyed Corpse Kings, while the Sword King dueled the Ninth Underworld King, and lastly, the Twelve-eyed Corpse King was undergoing a transformation below them.

The situation became extremely delicate. If Azure Phoenix Divine Empress could break through the encirclement and then block Ninth Underworld King, the Sword King would be able to destroy the Twelve-eyed Corpse King, directly striking it with Sword Heart Illumination to sever the Twelve-eyed Corpse King's soul spirit.

Without a soul spirit, the Corpse King would just be a Corpse Soldier, and no matter how formidable its power, the threat it could pose would be limited.

If they were delayed for too long, allowing the Twelve-eyed Corpse King to complete its transformation, evolving into fifteen-eyed, or even stronger… If it then joined the battle, it would be able to suppress the Sword King and Azure Phoenix Divine Empress.