Be the Sixth Child in the Demon Suppression Division

The otaku Luo Chuan unexpectedly traveled through time. Demons and monsters arose in the new world. The human race was in danger. The Demon Suppression Department used the Great Wall of flesh and blood to keep the demon race away from the human race. At first, Luo Chuan only thought about his own survival, but later he took up the responsibility of protecting the human race. Let's see how Luo Chuan transforms, step by step, becomes the supreme emperor, and opens up a peaceful and prosperous age for the human race...