Summary: What if Inuyasha had a sister? Yori of the Moon is tossed into the mortal realm where she's adopted by the the great Lord of the West. After his death she tries to repay his kindness by looking after his two sons. She never expects to fall in love with one of them. She never expects to be the key to taking down one of the greatest evils of their time. Pairing: Sesshomaru and OC

Disclaimer: I do hereby disclaim all of the characters in the Inuyasha franchise.

Claimer: I do hereby claim all characters not included in the Inuyasha franchise that I have created for this fanfiction.

Author's note: This story has been an idea of mine for a long time now. I always loved the idea of filling in the gaps of time that we don't get to see in the show with compelling characters. I also thought it would make sense for Inuyasha to have a sister. I won't spoil anything but our main character plays a huge role in Inuyasha's and Sesshomaru's lives. This story is very organic so I'm just writing how it feel the characters are moving at the time. As the story progresses, I'll have to decide whether or not to include Yori as part of the adventures of the main cast (Inuyasha, Kagome, Sango, etc. ) or have her carve out her own life and see where that takes us. This piece is going to be updated on a week by week basis. If you like it let me know and I'll make sure I continue writing or write more frequently. Also, the initial pairing is with Sesshomaru but as the story evolves this may change. :) Thanks for reading.


Prologue:

The Lord of the West walked up the steps of heaven with a heavy weight on his chest. He never liked being separated from Izayoi and his territory for too long. Especially now that Izayoi was expecting his child. As he trudged up the glimmering granite stairs, his hands clenched at his sides. The stories of the daiyoki Ryūkotsusei were growing in number and the Inu no Taisho was sure he'd have to travel to the Plains of Musashi to deal with the nuisance. Lord Tsukuyomi's summons could not have come at a worse time.

When he reached the gates of heaven, Inu no Taisho allowed himself one deep breath before pushing through the carved stone doors and entering the realm of the God of the Moon. In Tsukuyomi's castle it was always night. Lighting bugs danced over ponds and streams. The trees and flowers glowed from within, their light pulsing as if they had their own small hearts keeping them alive. Shadows touched every surface and beckoned the unsuspecting few to get lost in their darkness. Inu no Taisho followed a path of stone through the middle of the dark garden to Tsukuyomi's throne room. The God of the Moon was known for his love of luxury. The room was covered in silk and glittered with rare gems of all kinds. Beautiful men and women clad in white knelt at the edges of the hall, waiting for their master's command. Tsukuyomi lounged on his throne, the deep blue of his kimono jarringly plain compared to the splendor of the room, his mane of black hair grew straight down to the foot of his throne.

"Ah! The Lord of the West graces us with his presence." The Moon God's voice echoed throughout the hall.

Inu no Taisho bowed, "It is an honor, milord. Your summons was… a surprise."

"Yes well, the reason was a surprise to me, as well." Tsukuyomi pointedly looked at one of his attendant, a dark haired woman with the pointed ears, who was concentrating very hard on the wooden planks of the floor. Inu no Taisho guessed she was a wolf demon from his land. The God of the Moon populated his court with beautiful creatures from all over and was never picky about what kind of beauty he enjoyed, mortal or demon.

"What do you need?"

The Moon God sighed, "I have a dilemma. One of my attendants has been raising a daughter here without my knowledge for some years now. She is the result of an …unfortunate trist of mine a few decades back. She even has my devastating good looks."

"Congratulations. But I'm not sure what that—"

"She can't stay here." Tsukuyomi leveled the Dog General with a hard stare. "Amaterasu moved to a different part of the sky the last time I made her angry. My wife would not take this news well."

Inu no Taisho rubbed the bridge of his nose, wondering if he could dodge the request he was sure Tsukuyomi was asking. "You want me to take her with me."

"She can't survive on her own immediately, she needs guidance. But she's not helpless. She has two swords and attendants of her own. You could let her loose on the mortals for all I care, after you teach her, but she needs to leave. "

"And if I say no?"

Tsukuyomi stood and the weight of his power pressed on the hall. His dark kimono changed to sparkle with stars and galaxies and the black of his hair shown with an eerie blue light. His aura bombarded the Dog General with its power and he was pushed to kneel on one knee.

Tsukuyomi chuckled at the Lord of the West's submission. "Are you willing to risk my wrath for your pride little yokai?"

The Dog General's snarl shook the room but he stayed down. The Moon God watched his struggle with barely concealed glee.

"Your answer?" he asked.

Inu no Taisho strained against the God's powered but was only able to grumble. "Fine."

The Moon God smiled. "Excellent!"

The pressure in the air dissipated immediately and Tsukuyomi sauntered back to his throne. The Black haired god wasn't the least bit remorseful and he waited patiently for the Lord of the West to get to his feet before he began issuing orders to his staff.

Tsukuyomi clapped his hands and a small attendant rushed to his side.

"Bring the girl."

The attendant scurried away into the darkness. Inu no Taisho glared at the capricious deity and clenched his fist to keep from grabbing for his Tessaiga. Tsukuyomi ordered one of his attendants to bring him food and the room grew silent except for the sound Tsukuyomi's chewing.

It wasn't long before the small attendant reappeared with a young woman in tow. The Inu no Taisho blinked. Tsukuyomi was right, the girl had inherited his looks. The girl's hair had to be just as long as her fathers, the black tresses cascaded down her back from her high ponytail. When the light toucher her hair it sparkled like it held millions of stars in each strands. Her dress was simple, like the attendants, but it was the same navy as Tsukuyomi's. Unlike her father, the girl's skin was dark similar to the wolf tribes of the west and instead of bright blue eyes, Tsukuyomi's eyes, hers were a deep brown.

Tsukuyomi stood and held out his hand to his daughter.

"May I present, Lady Yori of the Moon."


Author's Note: The next chapter starts where the full story begins. Let me know your thoughts.