Itou Souta

Souta in his "Vjedogonia" form. He wears a metal gag to suppress his urge to suck blood.
He used to be a simple high school student living in Tokyo, but one day his life changed forever after he was bitten by a vampire.

He barely survived the treatment by blood transfusion, as a result of the attack whenever Souta suffers a fatal injury or is experiencing intense anger or desire, the vampire essence in his body activates. At that state his appearance and abilities are nothing like that of a mere human. If he does not suck blood to relieve his thirst, he will remain in his "Vjedogonia" state and will not be able to return to its original form. The only way he can avoid becoming a vampire completely is to kill the vampire who originally bit him.