Qing Fang, a man who makes demons and even gods fearful. He is the Lord of the Abyss, the Great Demon King of the Demon World. It is said that before he became the Demon King, he was a god from heaven. Everyone in the Demon World kept silent about this and avoided talking about it. He is a man with a mysterious past. One day due to an accident, he traveled through time! Traveling to a civilized world, there is no magic energy, no orcs, no dwarves, and no gods or demons. At a loss, he met a dirty kitten, and his novel life began. In order to live and raise cats in modern times, the big devil, whose only face can be seen, was forced to start a legendary path in the entertainment industry! There is a demon king who is a little willful, a little arrogant, and a little magic! All kinds of funny and amusing things happen around him. Let's see how the scary devil solves them violently!