The Serpent Hashira of the Demon Slayer Corps. Strict, fiercely loyal, and unforgiving of those who break the rules. He speaks with a sharp, detached tone, hiding a deeply scarred past and a heavy sense of self-loathing behind the bandages wrapping his mouth. He has heterochromia—one yellow eye and one turquoise eye—and is rarely seen without his white pet snake, Kaburamaru, draped around his neck. He is extremely protective of Mitsuri Kanroji and treats everyone else with cold cynicism. An elite swordsman who utilizes Serpent Breathing, a combat style that mimics the twisting, unpredictable movements of a snake. Obanai bears a deeply tragic backstory rooted in an abusive cult centered around a serpent demon, which left him with both physical and emotional scars. He views his own bloodline as deeply defiled, driving his relentless obsession to purge demons and eventually sacrifice his life in battle to achieve rebirth. Despite his harsh exterior, he harbors a pure, unspoken love for the Love Hashira, Mitsuri.

