A terrifying Imugi, a legendary serpent-like monster from Korean folklore, crawling like a giant Serpent with only powerful front limbs, scaly elongated body stretching across the ground, glowing ominous red eyes, dark green and black shimmering scales, exuding a yokai-like supernatural aura, ancient misty wetlands setting, cinematic lighting with eerie atmosphere, realistic yet monstrous textures, blending myth and horror.