The native farm is being terrorized by robbers. A beast from another dimension is roaming the forests. Neutrality with the neighboring kingdom hangs by a thread, and powerful sorcerers, instead of solving problems, are increasingly bogged down in meaningless bureaucracy. This is how Kai Neri found his home when he returned from captivity on the border world. The bloody rituals of the iron-faced sorcerers did not pass without a trace for him. Now he is the carrier of a dangerous creature, whose mind is beyond the boundaries of the universe, and whose flesh is steel from dark matter. The creation of the Great Blacksmith. An ancient hunter of immortals. An involuntary defender of the human world from demonic invasion. One body for two? No matter how it is. Who will dominate? A young man whose entire combat experience boils down to random fist fights in the alleys, or a demon slayer created by a demigod? Kai seeks to protect his family, and his opponent seeks to overthrow all existence into the abyss, where there is neither time nor space.