Oh! Holy is a supernatural romantic comedy webtoon that follows a timid high school boy who has the unusual ability to see ghosts and whose life takes an unexpected turn when he meets Holy, a cheerful and eccentric ghost girl who becomes deeply attached to him, leading to a series of humorous, awkward, and heartfelt encounters that blend everyday school life with the spirit world. As their bond grows, the story moves beyond comedy to explore themes of loneliness, acceptance, unresolved regrets, and emotional healing, using lighthearted humor to soften moments of genuine melancholy and growth. Mixing romance, comedy, supernatural, and school life, the series gained popularity for its charming character dynamics and emotional sincerity, also known as Oh! Holy webtoon, 오! 주예수여, Oh Holy manhwa, Ah! Holy, written by ARA, Holy ghost girl, supernatural romance webtoon, school comedy manhwa, and Korean romantic fantasy webtoon.