I don't own InuYasha. I wish I did though.

I would like to thank all of those who are reading...and a special thanks to those who take the time to review. I love to know that people are enjoying my story. Enjoy this chapter of Rin's Half Sister.

Rin was so happy. Today was her tenth birthday and Lord Sesshomaru promised a big surprise for her. Jaken wasn't so enthusiastic about the whole thing, even though it had nothing to do with him.

"My Lord is so kind to be giving me a present on my tenth birthday," Rin said.

"I don't know why he bothers with such a lowly human," Jaken said sitting down near the stream. He was tired of this young human traveling with them…but then again it would be quite boring without her there.

"Sometimes Jaken you are so mean," Rin said as she gathered her flowers she was picking to create a wildflower headdress for her Lord, and sat next to Jaken on the giant boulder he was currently perched on, clutching his Staff of Two Heads tightly.

Jaken sighed at the young girl. One would think that now that Rin was older, Lord Sesshomaru would be rid of her. But for some reason, he allowed her to do as she wished, and for some reason she wished to stay with Lord Sesshomaru.

"What do you think he got me?" Rin said as she began putting the flowers together in her own little pattern.

Jaken shrugged. "I don't know you silly girl."

The two sat there in silence, just listening to the water travel down the stream. Rin had nearly completed the beautiful headdress for her Lord, and Jaken just listened to all around him, trying his hardest to ignore the girl, but keep her safe at the same time. Suddenly there was a slight rustling sound behind them, drawing both of their attention.

Jaken turned slowly and came face to face with a large bear demon. His already big eyes grew wider as the demon growled slightly. Rin turned and let out an ear-pitching scream. The demon in response let out a huge roar and advanced toward them.

Jaken grabbed Rin and the Staff of Two Heads and bolted from their perch. They ran as fast as they could from the rapidly approaching bear demon.

Despite how fast they were running, the bear demon caught up with them in minutes and knocked Jaken into a tree with his large bear claws, knocking him into unconsciousness.

Rin looked at the fallen Jaken and then back at the bear demon. The demon's eyes turned to her with hunger in them. He let out a mighty roar and shook Rin to the core. Rin was quite scared now and wished the Lord Sesshomaru was closer to save her. She eyes widened in fear as the bear demon raised his claws preparing to strike her.

Suddenly a blur of black and white rushed the demon from the left, knocking him to the ground. Rin took this opportunity to check on the injured Jaken. He had a bump the size of her fist on his head, but he wasn't bleeding.

Rin turned back to the battle. The creature dressed in black was fighting the demon. She couldn't see the creature's face, but by the way it moved it had to be a female, and a demon.

Rin was afraid again. This demon may want to eat her too and this fight may just be a way to find out who gets to eat her and Jaken. She turned back to Jaken and continued desperately to wake him up.

"Master Jaken…Master Jaken, wake up…please open your eyes…"

She could hear screams coming from both demons behind her as she shook Jaken desperately.

"Wake up….wake up…think of what the Lord would say if he caught you like this."

Finally she heard a loud thud as one of the demons hit the ground, probably dead or extremely injured. Rin took the chance and turned around, preparing herself for the worst.

The other demon had her back to them. Rin could see long silver hair flowing down her back. It was tainted with her blood as well as some of the other demon's blood. Her black pants and top were also covered in blood.

She had cat ears on top of her head, indicating she was only a half-demon.

The half-demon turned back to Rin and looked at her with her light green eyes. Instantly Rin's brown eyes widened in shock and surprise, as did the half-demon's eyes.

She looked familiar, but Rin couldn't seem to place her. The half-demon looked surprised to see her too.

"Rin?" the half-demon said. Rin took a deep breath and nodded.

The half-demon smiled slightly and turned to her fully. The girl was injured, badly. She had a large gash across her chest and one of her right arm.

"Rin, do you remember me?" she asked.

Rin looked up into the friendly half-demon's face as she tried to place her.

She looked familiar, almost like Lord Sesshomaru's half-brother InuYasha, but more feminine. She had a friendly face and seemed so familiar. She reminded Rin of her mother.

Suddenly Rin realized who this was standing in front of her, the person in her family who was never talked about, but always in her mother's mind.

"Serenity?"

The half-demon smiled wider and nodded, before fainting due to the blood loss.