Having safely completed their infiltration mission, Haruomi and the gang add Hato Mitsukuri to their team, but then 'Goetia,' who has targeted Zilch, sends out the assassin 'The Blue Arrow Marquis' Leraje to attack her!! Zilch is in a hard fight against this 'Branch,' who uses magic arrows, but meanwhile the demon 'Duke' Berith starts closing in on the Seventh Gospel Organization where Haruomi's father is...!? In this slightly lewd and sinful fantasy, the curtain rises on the astonishing 'Goetia' arc!!