Anime concept art of Yoo Joonghyuk standing in profile with closed eyes, side view, looking calm and melancholic. He has messy short black hair, wearing a dark coat with a high collar. Projecting on the light teal-colored background wall behind him is a massive, menacing shadow of Kim Dokja in his Demon King form. The shadow reveals curly hair, distinct curved demon horns on his head, and a sharp, dominant profile leaning over Yoo Joonghyuk. Dramatic lighting, deep contrasts, ethereal and psychological atmosphere, high detail, masterpiece, 2D digital illustration, webtoon art style, cinematic composition.
