In the lawless slum of Amidahara, Rikurou serves as the immortal slave to the powerful Steel Witch Annerose. After surviving a murder attempt by the sadistic demon maid Michiko and receiving mysterious aid from Aishya, Rikurou begins to assert himself through sexual dominance over both Michiko and his unsuspecting master. As tensions rise in the "Dark Neighborhood," Rikurou's bold actions set the stage for a volatile new dynamic within Annerose's household.