Exorcists Rokuro and Benio unleash serious supernatural action while purifying the world of monsters. 
The Twin Star Exorcists are destined to end the war with the monstrous Kegare...but at what price? 
After Rokuro learns the shocking truth about his former life in Magano, Outcast Valley is attacked. Meanwhile, Benio attempts to free herself from Sakanashi's clutches to prevent him from gaining dominion over both the Kegare and human worlds!