I Am the Master of All the Fantasy Worlds

The young venerable reincarnated for eternity, became a god, a demon, and an adult. In the end, he gained the power of the world and traveled through thousands of planes. I have all the magical weapons and techniques in my hands. Who can be my opponent in all the worlds? If you are not convinced, come and try? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.