Devil's Source Language

When the gate of immortality was tightly closed and the means of mortals were like paper, he opened the dust-covered taboo book among the relics of his ancestors - "The Origin of Demons". "Spiritual roots? Those are just fragile shackles of this world. Kneel down and offer your loyalty and 'price'. I will tear this shackles apart for you and give you the real - demonic power."