Disclaimer- I do not own World of Warcraft or Naruto (although that would be kinda cool)
Chapter 1- The Betrayal
Before the war at Lights Hope Chapel the Lich King chose 2 of his strongest death knights to receive additional training so they could later become his generals. They were trained even harder, pushed to the brink of death every time. The two knights, Dullahon and Dreldares, began to resent the Scourge and their master, so much so, that they eventually began destroying Scourge settlements and killing any and all Scourge in the process in the guise of Crusaders. However, Arthas was wise to their betrayal...
In the halls of Icecrown Citadel, Dreldares and Dullahon had finished the days training with Deathbringer Saurfang and began making their rounds through the citadel scouting for any intruders, when they heard their masters call ringing in their head.
"Dreldares, Dullahon, return to me at once. I have a very important matter to discuss with you two."
"What do you think it will about this time brother?" Dullahon asked. "I'm not sure, but it's probably just another search-and-kill mission on some more crusaders." Dreldares answered. Something in him told him to be ready to fight, but he shrugged off the feeling and walked through the halls until he reached the Frozen Throne. They were greeted by the sight of three of their teachers, Blood Queen Lana'thel, Deathbringer Saurfang, and Professor Putricide, all standing with disgusted looks on their faces. Behind them was the Lich King, Arthas, who was standing with his sword drawn, glaring daggers at the two knights across the room.
"You called for us master?" Dullahon said, his battle sense going off, warning him of a coming threat.
"It's time you to pay for your treachery." The Lich King said raising his sword and further enveloping the area in ice. "What are you talking about master? We've done nothing of the sort!" Dreldares yelled in defense. "Don't lie to us whelp!" Saurfang yelled. "We have seen your betrayal and I have been waiting to strike you down!" "Lord Saurfang, you don't know what you're talking about, we have always been loyal to the Scourge!" Dullahon lied, preparing for an attack. "We know it was you two! The scorch marks from the Sulfuras hammer, and the precision strikes of Thunderfury, can only be caused by you! Now enough of this chatter, prepare to die!" The Lich King yelled.
Arthas's sword came down with a powerful blow to Dullahon's sword, causing him to stagger backward. Saurfang rushed over and attempted too land a decapitating strike on Dreldares, who barely managed to block it with his hammer. "Just give up now while you can, it'll make this alot easier for you two!" As this was happening, Putricide had used one of his potions and transformed into a three armed abomination. "Good news everyone! the potion works. Oh, excuse me!" he and Lana'thel had ran over and delivered devastating blows to the two knights. "Time to end this..." Just then, Arthas raised his sword and runic power coursed from the hilt to the blade making it glow a dark blue. He struck both Dreldares and Dullahon in one swipe with a force so strong, it knocked them from the citadel."You are no longer of use to me." He said as the two knights fell off the edge. "Heh, I was hoping it'd be more of a challenge than that."
Dreldares owns Sulfuras and Dullahon owns Thunderfury, and when they say "brother", they mean brothers-in-arms, Dreldares is a Blood elf, and Dullahon is a Night elf