Having activated the Demon King's blood, Vandalieu returned the blood that had spurted from his body back into his body through a wound that he had
opened elsewhere, circulating the blood inside his body.
"This is a countermeasure that I thought of when I first heard about Death Scythe, but to think that l'd be using it so soon," he said.
Death Scythe simply stopped the movement of his heart and lungs. The organs hadn't been physically crushed, nor had his blood vessels been blocked.
Thus, there was no problem in circulating blood if the blood itself moved.
He couldn't control his blood perfectly, so he was causing excess pressure against his blood vessels and causing his capillaries to scream. Blood was
flowing from his eyes, ears and mucous membranes, but it was far better than dying... though he felt bad for showing this to Zadiris and the others.