The Black Dragon Emperor's Redo Adventure

Summary

The time and space dragon, the leader of the demons, after being sealed by the great sage of mankind in the ancient war, Heath used his time and space talent to continuously learn the culture of the different-dimensional earth and become a generation of gods. But on a certain day, the great sage unlocked part of the seal and became a junior adventurer to start the adventure story again in this familiar and unfamiliar continent...