"Unfortunately, initiating the fourth Bloody Vortex and practicing Angel's Thorn completely drained Addison and Winterburn's life essence—the runes for the Quickness Technique will require about ten more days of effort."
"However, there is indeed a better choice than the Quickness Technique, the Spirit Spider Technique!"
The first page of the Vampire Secret Scrolls records the Adonis Clan Blood Clan's foundational Blood Flame Qi!
The second page then discusses—Bloodflame Transformation Art.
As the name implies, the Bloodflame Transformation Art cannot transform, it can only turn into a mass of Blood Flame!
Charles didn't care whether he could transform into various animals or assume the appearances of different people, but if he could transform into a mass of Blood Flame, he would be able to float in the air, which, although slightly inferior to flying, would suffice for travel.