The tragic story of Rin and Yukio's mother, Yuri Egin, continues to unfold. Yuri and Father Fujimoto were once young and promising exorcists.
In Section 13, they found themselves involved in an extensive operation that aimed to research elixirs of immortality and develop clones capable of harboring demonic spirits. The project seemed to be progressing at a good pace until the unexpected manifestation of a demonic spirit in one of the cloned bodies. And this is not a simple demon, but the most powerful of all: Satan!
