Everyone Else Is a Demon King, Why Should I Be the King of Monster Girls?

I clicked on a bad web game and ended up traveling through time and became a demon king. But... The style of painting is wrong! Everyone else is the devil, why should I be the king of monster girls? As the most evil demon king, Reno's daily task is to think about how to turn the princess saint into a monster girl. At the same time, he also wants to run his dungeon into the largest magic cave in Nolan Continent, making it the grave of adventurers and the final destination of brave men! Reynold's Quotes - "Since there is light in a world, there must be darkness, then I will become everything in this darkness."