"...In the dictionary of the God of Decapitation, the word 'retreat' simply does not exist."
Every Divine Beast, upon birth, is like a blank slate. When they parasitize a host, they simultaneously inherit the host's memories and disposition. As a result, the vast majority of Divine Beasts adopt behaviors and thought patterns resembling those of their original hosts.
This one was no different. In the process of assimilating with the former God of Decapitation, it unknowingly inherited his ways of conduct, as well as his understanding and obsession with Divine Power.
The Divine Power of the God of Decapitation represents an unyielding will to press forward and cleave through everything, never retreating no matter the adversity or foe. Even if the heavens and earth close in, "I will strike them down with a single blade." By adhering to this philosophy, the former God of Decapitation was able to condense the Seed of Divine Power.