Prison Guard Zero is a supernatural action manhwa that follows a prison guard who discovers that the prison he works at houses not just criminals but supernatural entities, using his unique abilities to maintain order in a facility where normal rules don't apply. As he faces dangerous supernatural prisoners, uncovers conspiracies within the prison system, and deals with his own mysterious past while protecting both inmates and staff, the narrative explores themes of justice, order, and the gray areas between right and wrong with intense action and supernatural elements. Blending supernatural, action, prison drama, and mystery elements with supernatural prison setting, the series delivers thrilling storytelling that appeals to fans of supernatural action and prison dramas. Also known as Prison Guard Zero manhwa, prison warden supernatural, action thriller, and Korean webtoon.