In a world plagued by the malevolent Millennium Earl, a foe of humanity, his sinister creations called 'Akuma' thrive on the emotions of despair and yearning. Standing against this threat are the Exorcists, individuals capable of eradicating these abominations. Among them is Robin, an Exorcist whose outward appearance belies her timid nature, haunted by a tragic loss that propels her forward. Fate intertwines her path with Lenalee, a girl in search of a lost love, as they meet in the coastal city of Osaka. Little do they know that their shared emotions have drawn the attention of the Millennium Earl, signaling imminent danger...