Start with Heart of the Demon Emperor

Ye Xuan traveled to a parallel world where demon energy was revived. He obtained the Demon Emperor System at the beginning, obtained the Demon Emperor's Heart, and had the ability to become stronger when encountering demons. Unknowingly, Ye Xuan became the supreme emperor ruling over hundreds of millions of monsters. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.