Su Xiao wasn't sure if the upcoming transformation would succeed. If it were an ordinary person, they would undoubtedly die after being injected with these substances.
But Matou Yanye was originally the Master of Berserker, and had command seals to control Berserker, maintaining a close relationship with the deceased Berserker.
Previously, Su Xiao collected some blood from Lancelot's corpse. Although Lancelot was deceased at the time, the Mad Enhancement was still attached to him.
Using storage space, the blood of the berserk Lancelot was preserved. In the Naruto World, Su Xiao obtained the blood of the Tailed Beast using this method.
Su Xiao originally intended to inject this substance into the bodies of other Heroic Spirits to see if a Berserk reaction would occur, but now he used it on Matou Yanye.
Su Xiao first injected Lancelot's blood into Matou Yanye. The Blood of Madness was black, like ink.
