A modern-day ninja combined with a powerful mind: the fight between demons and exorcists has only just begun!
Since Jiro merged with a strange entity called Rago, his life has become hell... All the Mononoke want to confront him to appropriate the power of the 'Black Sun', and he has been forcibly recruited into a mysterious organization, the Bureau of Secret Investigations.
With Ichika Kishimojin, a fighter who does not hide her antipathy for him, Jiro has joined a brand new unit: 'Black Torch'! The young agent still has to get to know his other teammates, but cooperation is already looking difficult...