In order to maintain his rule, Xin Sheng, the eternal demon king who ruled the world, went deep into the demon realm to find the highest and strongest power. Thousands of years later, he has become stronger and younger, and the world has also changed...
Source: MU
I, the Strongest Demon, Have Regained My Youth?! is finished and has null Volumes and 139 Chapters. It is also Known as: I, the strongest demon, suddenly became smaller?!
