마왕을 죽였다. 실수였다.

Discover the captivating world of '마왕을 죽였다. 실수였다.,' a Korean web novel that follows the journey of a protagonist who inadvertently becomes a key player in the Valent Saga by defeating the Demon King. This tale, featuring a clever protagonist with multiple identities, incorporates elements of action, adventure, comedy, drama, fantasy, martial arts, and psychological depth, making it a compelling read for fans of the Seinen genre. Through themes of demons, transformation ability, and non-humanoid protagonists, the novel explores a realm of kingdoms, knights, and political dynamics, offering readers a riveting and immersive experience.