[Diabolik lovers: Demon king guardian.]

Chapter 1. I got summoned by a Priest?

In hell it was loud, brutal and blood was splashed everywhere from the sinners, it was a normal day in hell but there was a demon king who was utterly bored.

"Castiel, this job is too boring for me. I have been a Demon king for over a century. I can't live like this with just paperwork! Entertain me."

"Master, please do not get angry, do you wish me to bring a sinner whom you can tprture endlessly and take your anger on it?"

Castiel bowed, slowly raising his head with his eyes glinting with a blood red color unlike his bright golden eyes.

Lucifer crossed his legs and looked at Castiel with his usual bored face with a mix of anger.

"I have been torturing those sinners endlessly my whole life. I tried many different torture methods too. Im sick and bored of it."

Castiel nodded and tried to think of something that his dear demon king could do, to not be bored all the time since being bored is torture for demons.

Not being entertained by something or finding something enjoyable would just decrease their demonic powers, it's not such a problem for the demon king since he has a lot of demonic powers that he could destroy earth with just a tiny amount of it.

While Castiel was in his thoughts the door got kicked open, there was a girl smirking.

"HELLOOO SUCKERS! How is my dear baby girl demon king doing today? Bored as always or happy to see me? It definitely has to be the second choice!"

The girl said obnoxiously loud.

"Rosier. It's the first choice and second of all, how many times have I told you not to call me baby girl? Do you wish to die."

Rosier the girl who kicked the door open, touched her chest in a dramatic way like she was hurt from his words.

"Ah...Lucifer...You are still so ever cold to me! I don't mind that though~ I've always been into bad cold boys like you♡" Rosier winked towards the Demon king, Lucifer.

Castiel couldn't bear to watch this any longer, how dare this fucking woman try and seduce his Master? He ran towards her at a unmatched speed that couldn't be seen by the nacked eye.

"Castiel, don't do anything hastily."

Lucifer said in a demanding tone that brought Castiel on his knees, not only castieo was affected by the demanding tone infused with demonic powers, rosier and the guards that were outside of the Palace and mere Demons were affected by it too.

The power Lucifer used right now is called "Demonic Demand" its a power that many generals and guards can use to control other Demon's or human's.

The stronger your demonic powers are the stronger is the demonic demand, since Lucifer is the demon king and has a unimaginable amount of demonic powers, many other demons fell into the demonic demand and had to kneel down.

"Shit...The demon king msut be angry!"

A demon outside the Demon Palace said, sweating a bucket because of how scared and stressed he was.

"I hope the demon king has mercy and won't have an outburst..."

Another demon said trembling on his spot.

Castiel grunted in pain, his knees were penetranting the ground and that caused his knee to bleed. Blood flowed out of his mouth, Rosier wasn't different, she was the same like Castiel.

Infront of them was a sitting crossed leg Lucifer who warched them with his red eyes gleaming the darkest bloody color you would ever see, it was a scary sight. It felt like they have crossed a starving tiger who would eat them with hair and skin (its a german saying-)