Disclaimer: I don't own Naruto. (Sigh, I'm so depressed.)

A.N.: The idea for Mayu's appearance as a Ten'nyo (Celestial Maiden) is based on the cover art of the volumes of Ceres: Celestial Legend I have. I love that series so I though it would be an interesting idea if my OC was a descendent of a ten'nyo.

Chapter 19

The Ten'nyo vs. the Demon

Diablo de Oscuridad noticed the sword in Mayu's hand. 'She even has the Sword of Light' he thought. Then Oscuridad pulled out his own sword, the Sword of Darkness. 'She must be the celestial being I'm destined to fight. Now is the time that Darkness will rule over Light.'

Then Oscuridad and Mayu began a heated duel with their swords. They seemed evenly matched as they fought. This was surprising to Mayu, since she didn't have a lot of experience with swords. But the sword felt comfortable in her hands. It exactly felt like she had done this millions time before.

As Mayu and Oscuridad dueled, Kakashi tried to think of what he could do against Oscuridad. He could see that Oscuridad wasn't anything like the Nine-Tailed Fox. But his attempt to think of a plan was interrupted because Oscuridad sent his minions after Kakashi. At first Kakashi was having no trouble taking out the minions one by one. But them they were beginning to outnumber him. For everyone he took down, it seemed like to more would pop up in its place.

Mayu noticed that Kakashi was having some trouble and tried to head over to where he was to help him, but just as she began to head towards Kakashi, Oscuridad tried to attack her from behind. She sensed him coming and turned around in time to block his attack.

"I'd worry about yourself if I were you" said Oscuridad. Mayu knew that there was no way in hell that Oscuridad would let her go to help Kakashi. She figured Kakashi's best chance for survival would be to finish off the demon quickly. 'Please try to hang on Kakashi' she though as she concentrated her charka into her sword.

Kakashi was completely surrounded by the demon's minions. He figured the only way to stop them was for Oscuridad to die. But he didn't know how long it would take for Mayu to defeat him. He figured his only chance was to swipe then all out at once.

"Fire Style: Flame Vortex"

Then all the minions were engulfed in flames and were burned to ashes. Kakashi charged up his Chidori attack and ran to help Mayu.

Oscuridad noticed Mayu's yellow chakra swirling around her sword. 'So she's gonna try to destroy me in one shot' he thought. 'Well, I'm not gonna allow that to happen.'

Mayu knew she had to aim her attack carefully. She was putting almost all of her chakra into this, which meant she only had one shot.

Oscuridad's black chakra began to swirl around his sword. He planned to strike Mayu before she could get her attack ready. He began to charge at Mayu, and then he felt an attack in his back. It caused him to stop in his tracks. Oscuridad turned his head to see that Kakashi had hit in the back with the Chidori.

"You bastard" said Oscuridad to Kakashi.

"Now Mayu!" Kakashi called to his girlfriend.

Mayu knew this was her chance. But she had to be careful so not to harm Kakashi. Kakashi kept his hand in Oscuridad's back to hold him in place even though the demon's black blood was causing him to feel a burning sensation in his hand. Then Oscuridad took his sword to try to cut off Kakashi's hand. Kakashi used his other hand to use one of his kunai to block the sword. As Kakashi struggled against Oscuridad's sword Mayu charged at them, her attack ready.

"Move Kakashi!" she called out.

Kakashi let go of Oscuridad and quickly got out of the way. Mayu then sliced the demon in half.

"No…" muttered Oscuridad as Mayu's charka combined with celestial powers began to destroy every cell of his body. Oscuridad let out a blood-curdling scream as his body turned to ashes and blew away. It was finally over.

Mayu and Kakashi noticed that the hand Kakashi had stuck in the demon's back was badly burned. Mayu took his hand in hers and concentrated her power into it and it healed.

Kakashi looked at his healed hand. "Is there nothing you ten'nyo can't do?" he asked her.

"I don't know this is the first time I ever used my celestial powers. Hell, I didn't even know I had them" said Mayu. Then her hair and eyes returned to the colors they originally were and she collapsed into Kakashi's arms.

"Mayu? Mayu!"