Death Blood, the real name of those cloaked figures.
The full name of their kind is called Death Blood.
When it comes to strength and features, Casio has a clear understanding after fighting with Death Blood. It's a divergent species that possesses a dual form, fears no death, and regenerates rapidly.
Other than that, Casio has gained some more information.
For instance, the real body of Death Blood is a mass of blood. It can enter a human's body and establish a bizarre symbiotic relationship. Death Blood grants its hosts powerful strength and superb regenerative abilities.
However, it's not without cost. The more the host relies on and uses this power, the higher the proportion of Death Blood in the host's blood will become until it completely replaces the human's circulatory system and takes complete control of the host.
Even the thinking brain is fooled and controlled by the blood.
