Xu Changyu, a low-level boxer in Mirror City, grew up without a father or a mother, relying on his fists to survive in the alleys. An underground boxing match awakened the sleeping seal in his body for the first time, and also caused him to be involved in the thousand-year-old relationship between the chaebol, security, seal-keeping sect, and the Nine-Aperture Seal. Doors opened in front of him about his father's old case, his mother's fist seal, the mortal world that had been drained of life, and the devil's abyss buried deep in the ruins. He only had one left fist, a group of wounded soldiers, and a newly raised flag. From the dead end alley to the nine orifices, Xu Changyu did not bow to the immortal gate or kneel to the old seal. He only asked: If anyone wants to use me as a key, ask for my fist first.
