Shun Usami
About
A leading doctor from the organization 'Immortal Order'. He's allegedly involved in the devil's work, using humans for experiments and having their deteriorated organs replaced with machinery.
But it is later revealed that he actually treats patients suffering from a disease that turns them into man-eaters.
It is later shown that he is quite considerate of his patients and studies to extend the life of the affected.
His original name is Shiro.
