3,000 Years earlier...

A peaceful place...families are enjoying their time together, even the royal families who are having a grand ball at the castle. All the realms are having a grand time! The celebration is for the King and Queen's new baby boy who is playing with the prince of Hell who turned 3 years old today.In the midst of all the excitement, master Kyuhyun slipped away to the balcony to get some fresh air. When he thought he had enough air he decided to back inside, and as he did...he spotted a little boy, no older than 4 years old looking up at him.

"Hey there, what are you doing in here?" No answer from the boy "Are you lost?"

...Silence…

"Well, well, well if isn't Lord Kyuhyun," a voice said.

"Whose there?"

"What's the matter? Can't see me? I thought angels were supposed to be powerful with many abilities...I guess seeing a demon isn't something you can do." The voice came from behind, and as soon as Kyuhyun turned around...he was...gone.

"I guess this sword can kill angels, and here I thought my old man's sword was a fake! Now the almighty Kyuhyun's power will be mine...one down...3 to go.”

[Yesung's P.O.V]

"Ryeowook do you feel that?"

"Yeah...something must have happened to Kyuhyun…let me go check!"

"NO! You stay here with Yoseob, I'll go check." I said before I left the ball room and tried to find Kyuhyun, his energy was getting weaker and weaker, so I needed to act fast! I found Kyuhyun in one of the rooms on the ground unconscious, with an open wound in his heart and his energy being withdrawn.

"Who are you? Explain yourself!" I said as I pulling out my sword.

"My name isn't important! As for this, you already know the answer!" The man said and came at me with his sword. I managed to block but I still got hurt and soon a little of my energy was being taken.

"What is that sword?!" I asked in rage.

"This? It's an ancient weapon that was made to kill any angel and be able to take their power."

"You mean?"

"Yes...this is the infamous sword SHINNYUSHA"

"Well, you can't kill me! I'm stronger than that!" I excliamed as I went after the man with all of the energy I did have left but it was difficult to fight and avoid his attacks at the same time.

 But I eventually managed to him killed him. I dropped to the floor from exhaustion and noticed that there was a little boy looking at me with cold eyes.

"Little boy, I want you to take this sword and hide it somewhere so no one may ever find it." I realized that giving a chid a deadly weapon was not the best idea but I had no choice, this sword cannot be held by any angel.

The little boy took the sword in his hand and smiled evily, "You are a fool, giving a child this sword!"

That very night the little boy disappeared and the castle was aware that Kyuhyun was now dead. Seeing as how that the man who killed him was a demon, I had no choice but to sever ties with Hell.

That same night at the King of Hell's palace.... 

"What are you talking about?"

"You heard me! Kyuhyun was murdered because one of your people killed him!" I yelled in rage.

"But we had no part in it!"

"Save it! Hell is home to demons and devils and so if one of you messes up then you all do!" I yelled pointing my sword at Seungho.

"Fine then, I hope you rot! You can forget the treaty we signed! One more thing...If I see that brat of yours ever around my son then I will personally kill him!" Seungho yelled.

"I would like to see you try! My son is only a baby so within 4 years he won't even remember that brat of yours! What was his name again? Oh that's right, that good for nothing seed you call Doojoon!"