Create a cinematic dark medieval fantasy scene where a lone boy stands as a black knight, dressed in dark armor dripping with smeared blood. He is in a bloody swamp, his tattered cloth and fur-trimmed cape add to the grim atmosphere. The detailed dark stylized forest background enhances the ominous feel. He holds a dark sword by its hilt with both hands, planting it firmly into the ground. His horned armet helmet covers his face, and he stands in a dynamic angle, viewed from the side, looking down. The scene is set under a snowy night with dim light, casting a dark and foreboding atmosphere.