DISCLAIMER: I do not own Vocaloid, any of the characters, or the song this is based off of.

xX The Rose Sword Xx

Two twins were playing out in the courtyard of a grand black castle. The walls are like a marble mirror; forever reflecting back the image in front of it, while tainting the image to a dark blur. A million yellow roses line the sides of the castle, for this is the Yellow Country.

You could hear the faint laughter of the young twins as they lay next to each other in the dry, but glistening grass. The prince and princess of the Yellow Country. They have been together since birth, and that is how they wish to stay. A light breeze blew their golden hair to the side, brushing past their contrasting blue eyes, which reflected the sky above them.

"Len, if you could have anything in the world, what would it be?" the young princess asked her brother. Today was their sixth birthday, and she never heard her brother ask for anything like she had.

The prince, Len, pondered this for a moment. Material items didn't appeal to him as much as they did to his sister, but the only thing he truly wanted was something only she could give him. So finally the boy who, may I remind you, was six; answered,

"I want you to smile." His sister then sat up and looked at her brother with a questioning look. "The one thing in the world that I want is for you to be happy Rin." Len sat up and looked at his sister. "Your smile is one of my favorite things, so I want you to always smile for me."

An innocent smile warmed Rin's face and she looked at her brother. He always was extremely smart and wordy. Even though Rin didn't understand all of what her brother was saying, she knew that it meant he cared for her. So she gave him his present, she hugged him and gave him a smile that was meant only for him and his eyes. It was her secret smile for him.

But their privet happiness was broken when they heard a loud commotion. A couple of servants came up to them. One grabbed Lin, and the other Rin. The man servant spoke in a cold hard voice, as the twins struggled in their arms.

"The King and Queen have given orders to have you two separated." The replies to the news were cries of struggling and emotional pain as the twins reached out to each other. Len's hand raked through Rin's hair and a black rose that had been pinning back her bangs unlatched into his small palm.

With this the two children were dragged away from each other. The girl being taken towards the dark castle, and the boy being taken to a dark burgundy carriage. Later Rin escapes back out to the court yard and finds Lens golden pocket watch father had given him. She put the chain around her neck and held the watch close to her heart and she holds onto the only thing she has left of her brother and cries. And in an unknown part of another country, her brother was holding her rose pin, and doing the same thing.

Six years later…

The young princess had grown up to be a distant, cold Queen. She looked out of a glass window onto the courtyards. The same place where she and her beloved brother were separated. She never did find out why she and Lin were torn apart. What she found out through blackmail is that it was for her parents own selfish reasons. But what she knows for a fact is the ever since Len left, the Yellow country has had an ongoing ominous forecast. The sun never shone the same way, and the sky was never as blue.

She flattened out her silky yellow gown. Almost everything she wears is Yellow. Yellow and black. Her gown touched the floor covering up her black heeled shoes. Black lace webbing covers half of the skirt and black silk traces around the strapless bodice. Her short blonde hair was styled into a wavy bob, and is adorn with black flower petals swirling in different patterns. Her pale skin blended perfectly with the repeating colors; the thing that stood out among her is her vivid blue eyes, which had been cold for six long years.

She turned her head away from the window as she heard the doors to the room open.

"Want do you want." Her high voice came out demanding and cold. After a few moments and smooth relaxing voice responded her.

"I am to be your personal servant Your Highness." The voice sounded oddly familiar to Rin. She turned around to see the person. When she did a gasp escaped her small lips and her eyes once again filled with the warmth they had lost. Their stood Len, in a yellow tail coat and black trousers. His hands covered in white cloves. One hand behind his back and the other placed over his front. He smiled at Rin and a small black rose pin out of his pocket and held it out to her.

Rin, forgetting she was a Queen, or just not caring, ran over to Len and leaped forward onto him. Her arms wrapped around him as they fell onto the floor. Once again an innocent smile lit up Rin's face and she gave him his smile. For the first time in what seemed like forever, the twins were together, and were finally whole again. They were reunited with their better and half, and let laughter fill the once sullen cold room.

A few moments later Rin stood as a queen again with her tiny held out in front of her. Len took her hand a kneeled on one knee, and bowed his head and spoke,

"You are my princess and I am your servant. I am tool to use as you please, and I will protect you always." For you, I'd even become evil.

It was the silent vow that was never spoken, that welded their bond together. Forever they will be the Daughter and Servant of Evil.