Tianyan Demon Realm

In the world of demon masters, those who slave and control demon beasts become demon masters. Here, there is no real continent, only a small world of demons as numerous as the sands of the Ganges River. A demon warrior carried by a giant ape provoked: I have muscles and strength, and I can punch mountains and rivers with my fists! The magician who rides a giant dragon and rubs fireballs has an expressionless face: I have a god-level magic that can destroy the world! A demon master and protagonist who was obsessed with research and couldn't extricate himself slowly raised his head: I don't have much, that is... [Don't worry about the introduction, we won't follow any trends, just take it easy]