Synopsis：For a century, demons have ravaged the world, plunging the people into untold suffering. Deep within the Blazing Sun Volcano lies a special metal called Yitie, which, when forged into weapons, proves remarkably effective against monsters. However, mortal bodies cannot withstand the immense energy of Yitie. Thus, many warriors came to the volcano, willingly severing their own arms to replace them with prosthetic limbs forged from Yitie, earning the title "Demon Sealers." These Demon Sealers possessed astonishing combat power, but the power of Yitie would eventually backlash against them. As the demons were wiped out, the Demon Sealers became targets of public fear and were forced to go into hiding. Suddenly, an accident revealed that the demons had been reborn. Through deeper investigation, they discovered that everything was a conspiracy targeting the Demon Sealers—the so-called slaying of demons and upholding of justice had been a lie from the very beginning.