Blue, a supporting character with long blonde hair, is a resilient figure clad in leather outfits within the manga and lingerie in the anime. She develops a romantic bond with Mad Saulus, a dragon-faced gangster, their turbulent relationship driving the narrative’s core conflicts.

Her past unfolds with surviving a brutal ambush by the motorcycle gang Hell’s Wind, during which her male companion dies and she endures assault. This trauma forges her into a vengeful warrior years later, when the same gang terrorizes a village, reigniting her quest for retribution.

Her arc concludes when Mad Saulus, shattered by her death, consumes her corpse in a grief-stricken frenzy. This act of cannibalism mutates him into a monstrous force, propelling his climactic battle against the protagonist. Blue’s choices, death, and bond with Mad Saulus irrevocably steer the plot, anchoring pivotal confrontations.

Her journey intertwines survival, loyalty, and the scars of violence, reflecting the story’s harsh ethical terrain through her resilience and the catastrophic aftermath of her fate.