Hundreds of years ago, Yang Shuo had grown tired of feeding on ordinary magical beasts' blood. Thus, he decided to hunt the winged-beasts living on the floating island without knowing a beastmaster living there, protecting all winged creatures.
There were phoenixes, three-tailed pegasus, etc.
The legendary phoenix had fire and wind elements that are above the blue-stage level. If a vampire drinks phoenix blood, the vampire's flying speed will increase. Not only that, the vampire would be able to make an object melt with just the touch of his hand, making the phoenix the most-wanted prey.
At that time, Yang Shuo managed to set a trap to catch a phoenix. He didn't expect that once his trap succeeded in curbing the phoenix, the device immediately fell apart, and the mastermind who destroyed it and let his pray ran away was that 'guy.'
"Hoy, blood-sucker. The place of this territory is under my protection. Go away, or I will make your life like hell."