Tear of Ice  

One of the four magical machines known as the Coffin Knights was released from a hidden coffin by Pazuzu. These machines, which include the Red Knight, Blue Knight, Mirror Knight, and Hyper Knight, have awakened without their original master and now roam freely in the Tower. Gremica explains that they were created using Dark Armour previously used by the Sumar Empire, and each knight likely retains some of its unique characteristics. Henaros goal is to retrieve these machines for Amina's orders and safeguard the king's shadow.