C2811 All Ace Attacks

"Contain an astonishing infernal energy, blood energy, and devilish energy …"

Xu Liusu pointed out the key point, "This guy has used human skin to swallow countless elements, and it's very shocking. Over the years, he still needs to use blood to immerse himself in it. How old is he, and how much did he know about this demonic art?"

That's right, this was a demonic art