Russell rode Unicorn Polly through the dense swamp forest at such a rapid pace that the surrounding scenery was nearly a blur.
This was both an outlet for the boiling emotions after his promotion and a way to experience the fresh "Prime Breath" through flight.
The term "Prime Breath" originates from "Dragon Breath."
Dragons can exhale, releasing Dragon Breath of immense power. Although Prime Breath isn't as formidable as Dragon Breath, it is still tremendously powerful.
Most importantly, Prime Breath can be used to cast Prime Breath Greatsword Skill, that is magic.
By nature, Phantom Beasts can cast elemental energy spells. After forming a contract with a Phantom Beast Knight, the elemental energy merges into Prime Breath, enabling the release of Prime Breath Greatsword Skill spells. This also allows the Contracted Knight to gain the ability to cast Prime Breath Greatsword Skill spells.