Ultra Dark Empire

The male protagonist traveled to the Ultra World to obtain the Dark Master System, established an empire of darkness, and became stronger step by step. He defeated countless enemies and became the supreme master. At the moment when the universe was unified, the more powerful magic attracted him to move further. Please bear with me if this is not the first time I write. If there is any improvement, you can mention it. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.