"Corpse Princess: Aka" is a supernatural action anime centered around Makina Hoshimura, a deceased girl revived as a Shikabane Hime, or Corpse Princess, bound to a contract with a Buddhist monk to hunt down 108 undead corpses known as Shikabane to gain entry into heaven. Makina’s resurrection is tied to her unresolved vengeance against the undead who slaughtered her family. Armed with dual MAC-11 submachine guns and enhanced physical abilities, she operates under the guidance of her contracted monk, Keisei Tagami, who provides spiritual support and tactical assistance.

The narrative explores the dynamics between Shikabane Hime and their contracted monks, who belong to the Kougon Sect, a secretive organization dedicated to eradicating Shikabane. The series delves into the moral and emotional struggles of the undead hunters, as they grapple with their lost humanity and the violent nature of their existence. Makina’s journey is intertwined with the lives of other Shikabane Hime, including Hokuto, a fellow undead hunter with a tragic past, and the enigmatic Ouri Kagami, Keisei’s younger brother, who becomes increasingly involved in the supernatural conflicts.

As Makina progresses in her mission, she encounters powerful Shikabane, including the Seven Stars, a group of elite undead with unique abilities and their own agendas. The series balances action-packed battles with moments of introspection, revealing the personal histories and motivations of both the hunters and their prey. Themes of redemption, loyalty, and the consequences of vengeance are woven throughout the narrative, as characters confront their pasts and the ethical dilemmas of their undead existence. The story builds toward a climactic confrontation with the forces threatening both the living and the undead, culminating in a resolution that ties together the fates of the key characters.