Disclaimer: I do not own Sailor Moon or Harry Potter. I only own the plot line for this story.

Timeline: It starts at my own version of the battle at the Department of Mysteries. It is many years after Serena turns into Cosmos.

Summary: AU During the fight at the Department of Mysteries the Order and the Trio meet Luna's Guardian Angel. She disappears soon after bringing up a lot of questions for the next year along with two new teachers.

Lady of the Stars

Chapter 3:

Meanwhile…

As soon as she stepped though the Veil she started to fall in complete darkness, not knowing how long it would take for her to reach the bottom or if it even had one. All she knew was that she had an innocent to save!

'I wonder how far down he is? If he is too far down it may be too late! I better try and pinpoint his aura.' Sere concentrated on the darkness around her, trying to find a live being. 'There!' As soon as she sensed a live aura she arched her back from which a pair of glowing white wings exploded outwards. Wind surrounded her making her cloak move to lay down her back between her wings. It revealed the figure of a beautiful woman dressed in a strange outfit: a white leotard with a silver pleated mini skirt over the top. The leotard had gold ruffled shoulders and a collar which had the silver cloak attached, at the chest there was a round locket which had a wing on either side framing the gold eight-point star in the centre. The skirt parted at the front revealing multicoloured vertical stripes and at the top of the skirt there was the same locket as before only two silver ribbons were attached to it which trailed to the tops of her shoes. Her shoes were silver high heels which had small decorative wings coming out either side of the heel. There were rings on each of her fingers, which seemed to be made out of different colour stones and engraved on them were the planetary symbols for all the planets except earth. She seemed to emit a powerful yet calming aura however her face was still hidden underneath the hood of the cloak.

Using her wings, Sere flew towards the aura that she sensed. As she drew closer she saw the body of Sirius Black who had seemed to have stopped yelling now. As if sensing her which he most likely did he looked up and stared at her wondering who she was. She looked at the man in front of her; she could tell that he had the potential to be really handsome with his long black hair, stormy grey eyes and a good but undernourished body. From his unhealthy appearance and the underlying pain that was in his eyes she could tell that he must have had a hard life. Sere drew closer and held out a hand to Sirius, she looked into his eyes trying to persuade him to take it. "Mr Black, take hold of my hand, please. I will get you back to your godson." She stated in her calming tone but Sirius just continued to stare at her.

Sirius did not know how long he had been falling but he wondered if he would ever reach the bottom. He could not believe he would die this soon! He still had to clear his name! 'I bet Wormtail is happy now, now that I cannot exact my revenge! Why did he betray us? WHY?' Sirius was soon brought out of his thoughts from feeling a strong magical aura coming his way.

Not many magical folk could really sense magical auras as it is a skill that is acquired when one has strong magical training or sometimes if they come from a strong bloodline. Most aurors were taught how to sense auras and others such as Dumbledore. Not many used the skill as it was hard to master and if people really wanted to they could mask their aura making most magic folk believe it pointless to learn. However this was not the case with people like Dumbledore or Voldemort since they were stronger than many their auras were harder to hide and easier to notice, although they did hide some of their aura in order to stop people knowing the full extent of their power. Dumbledore also did it so as not to overwhelm people as sometimes auras make the magic in the air too thick causing some people to black out.

The magical energy that Sirius was sensing seemed to be the same strength as the amount that Dumbledore projects, he wondered who they were because they could be helpful in the battle against Voldemort. 'If there was a way out of here.' He sighed. Sirius soon saw the figure coming towards him and as they came closer he saw the figure was actually a woman. '…with WINGS! What is she? Is she an angel?' The woman slowed as she neared giving him a good view of what she was wearing and he was amazed by the beauty he saw. 'If I am going to be stuck here with her I don't mind too much!' He smirked but was startled when she outstretched her hand to him and asked him if he wanted to go back to Harry.

As Sirius looked at Sere he tried to decide if she was legitimate or not, for all he knew she could be trying to hurt him. 'Wait a minute… how could she hurt me more? I'm already dead!' Sirius contemplated this and looked into to the hood trying to see her face. Sirius stared into to her unique silver eyes with blue specks as she stared back at him they seemed to get a glimpse of the other's soul. Sirius was surprised to see an ancient soul which seemed to have seen too much pain for someone who looked so young. Sere saw a soul that seemed to have experienced pain on a far greater level than most she had met. She watched as he found her to be trustworthy and grabbed hold of both of her hands; adjusting to the extra weight and flew up to the arch which seemed to glow with purple and black energy.

"Who are you? Why are you helping me?" Sirius curiously asked deciding that since it might take a while to get to the exit, as is seemed far away, he should get some answers out of this angel.

"I have many names: Messiah of Light and Lady of the Stars to name but a couple. But you can call me Cosmos. As for the reason that I saved you… I know that many would miss you from the way Harry acted when you fell through the Veil and I know that you are innocent of the crimes that you were accused for." Sere replied calmly deciding to indulge Sirius by giving him some answers.

"How do you know that I am innocent? How are you gonna get us out of here no one can escape! And why do you have wings?" Sirius carried on his questioning wanting more answers.

She smiled at his rapid fire questions. 'Someone's curious' "All people in my family had wings so I suppose it is part of my blood. I know you are innocent because Luna told me so and she would not dare lie to me. However we will find out if you are truly innocent in a minute." She calmly replied with a smirk.

Sirius was just about to ask what she meant when he realised they were at the arch. Sere swung Sirius through the arch making him tumble over and sprawl out on the ground with a surprised yell. Where he was soon squashed by the weight of Harry hugging him and squeezing the air out of him.

"Hey Harry! I'm glad to see you to but could you let me breathe!" Sirius breathed out as he tried to sit up and pry Harry off of him. Harry quickly let go, said a quick 'sorry' and helped Sirius sit up. But he was soon winded again when Remus hugged him. "Moony you too, would you let go!" Remus released him and sat next to Sirius trying to wipe the tears from his face overjoyed at having his best friend back. Sirius was soon helped up and he leant on Remus and Harry smiling at others around him who seemed happy and amazed that he came back. 'I'm back, I'm back! Did I really just come back from the dead?' At that shocking thought he turned around and watched Cosmos gracefully walk through the Veil with her body once again hidden by her cloak. 'So she walks through yet she decided to throw me! How nice of her.' He thought grumpily.

Serenity looked towards Sirius waiting for the question she knew he would ask. "What did you mean when you said 'we will find out if you are truly innocent in a minute'?" he asked just as she predicted. There were only a few that were gathered now as the others were cleaning up.

"If you were guilty even I would have some difficulty getting you out of the Veil." She replied calmly, she watched as others became more interested in her, realising that she had to get out of here soon. She wasn't meant to interfere in events that didn't explicitly call for her. 'I can see I'm going to get a lecture about this.' She sighed quietly.

"What do you mean? Do you know what the Veil is, because all we know is that it is some ancient thing which kills you?"

"Of course I know what it is. It is Saturn's Veil, on it is written how the people through the arch are treated. The Veils were also forbidden years ago by Merlin himself." 'Because your kind never used it for the right reasons. You abused it, thinking with it you couldn't be told no. Nothing but children not understanding what it is they possessed. I will have to destroy it myself later on.' She fumed in her head silently, thinking back to the past. People around looked stunned at the news and became curious to how this newcomer knew so much.

Albus Dumbledore looked at the woman with growing interest. He was surprised when she threw herself into the Veil and when she came out again he became even more intrigued to find out her identity. As he looked around he noticed he was not the only one, his eyes landed on Luna who he knew had some answers about the mystery woman. 'Maybe she'll be able to aid us in this war!'