In Ancient Times, the Demon Heart Lightening Emperor was its known user. The Supreme Demon Heart Scripture was a Divine Ability that guarded the Lightning God Palace of the Demon Heart Lightening Emperor. In the Lightening God Palace only a select few could cultivate it. In the Great Thousand World, the profound and mysterious Divine Ability was above the Divine Art. The Supreme Demon Heart Scripture that Mu Chen obtained was incomplete and was only comparable to a Quasi-Perfect Rank Divine Art.
Upon successful cultivation, the user can enter the Demon Heart State, in which any external disturbances will be blocked out. At that time it can be considered as an absolute controlling state. Every single strand of Spiritual Energy in the body, as well as the power of their physique, can be controlled to the limits.
Rumor had it that the Palace Master of the Lightening God Palace was only at Quasi-Heavenly Sovereign Realm, but in the Demon Heart State he possessed the strength to even fight with Heavenly Sovereigns.[1]
Before one can cultivate the Supreme Demon Heart Scripture they must first form a Demon Heart seed by striking their own heart with the Nether Demon Heart Lightning.[2]