The wings that popped out from behind the Blood Demon William were all black and metallic, and when they were spread out, they were more than ten meters long. With a slight flap of the wings, there was a strong wind around, like the howling of ghosts and wolves, with amazing power. In addition to growing black wings, the appearance of the Blood Demon William also changed a lot. His handsome face became haggard, his skin became wrinkled, his cheekbones protruded, his fangs were exposed, and he had two horns on his head. His body became tall, but very thin, and his sternum and ribs could be seen through his skin. From a distance, it looked like a huge skeleton, which was particularly creepy. This was the strongest form of the Blood Demon William. After the transformation, the speed, strength, defense, and reaction would be greatly improved, and the bloodthirsty desire would become more intense, and he would be a man-eating demon. Looking at the completely changed Blood De...