Aka Ibuki directs Ayaka Security, an organization outwardly presenting as a security firm but dedicated to combating and exterminating dangerous entities called Mitama. As a Ley Master trained under Makoto Yanagi as the second disciple, he specializes in battling Ara-Mitama. He wields a handgun firing specially crafted bullets infused with his supernatural abilities, augmented by unique power residing in his right hand. Born with the surname Ibuki and given name Aka, his full name carries symbolic weight: "Aka," meaning "vermilion" or "scarlet," signifies passion and intensity, while "Ibuki" references Mount Ibuki in Japan, evoking a connection to a place with an exotic atmosphere. This naming reflects his vibrant presence and cultural ties. Physically, Aka Ibuki possesses red hair, brownish-red eyes, and a slim build. His typical attire includes a black suit, a loosely worn red tie patterned with black vines, a black ring on his left index finger, and earrings. An Ayaka Security red band adorns his upper left arm, reinforcing his organizational affiliation and the color motif of his name. His background involves deep bonds and subsequent conflict with fellow disciples of Makoto Yanagi. He once shared a strong, rivalry-like friendship with his senior disciple, Haruaki Kurama. However, their relationship fractured after Makoto Yanagi's death due to fundamentally opposing philosophies on spiritual connections and methods for handling Mitama. This ideological clash over pacification versus extermination of Ara-Mitama fuels ongoing tension and confrontations between them. Personality-wise, Aka Ibuki demonstrates kindness toward humans but exhibits ruthless efficiency and no mercy toward Ara-Mitama. Underlying anger and strong convictions drive his actions, compelling him to pursue his goals relentlessly, even through methods others deem extreme or dangerous. This blend of compassion for people and cold determination against supernatural threats defines his complex approach.