Webakaza's blood demon art, destructive death, merges shockwaves with martial arts, making him a deadly combatant. Akaza's compass needle technique. Webtanjiro kamado, demon slayer corps member wielding the legendary hinokami kagura, beheaded the demon akaza after an intense ideological clash. Webhis transformation into a demon came at a steep cost, severing his ties to his humanity and plunging him into a world of eternal darkness. Despite his outward facade. Webin the demon slayer series, koyuki is a key character in akaza's tragic past representing the love and the humanity he lost after turning into a demon.