I don't know about the story you're looking for, but here's some suggestions about your other request.
Do you know how to dance? by sugar0o
“...there are two old sayings Mr. Taishou..., ‘Hell hath no fury as a woman scorned.’ & my personal favorite, ‘To err is human, to seek revenge, is divine.’” she stated as she smirked at him.... Non-cannon.AU,setting: modern Tokyo. S/K I/Ky pairing. R&R plz*********** Winner of the 2008 3rd Quarter Dokuga awards in 2nd place for best AU/AR, and 3rd place for best Lemonfic
Rating: MA, Universe: Alternate, Status: Incomplete, Category: Chapter Stories, Chapters: 10
Hallowed Desire by Demonlordlover
COMPLETE! Sesshoumaru wanted more than a mate. He wanted her, Kagome.
Rated: MA, Chapters: 33, Complete
Healing Carefully by Caedes
Kagome has a special power to heal yokai as well as humans. When the Western Lord figures out about her talent, he brings her to his lands.
Rating: MA, Universe: Alternate, Status: Complete, Category: Chapter Stories, Chapters: 40
Paper Cranes by midori Haru
Meeting, attraction, courting, commitment. For most of the world relationships form in the normal fashion from start to culmination. Naturally normal isn't enough for Sesshoumaru. And he wonders why he runs into problems trying to build a relationship from the wrong end.
Rated: MA, Chapters: 61, Complete
Progression by Sidhe
Have you ever danced with the devil by the pale moonlight? Kagome has. It was a refrain that echoed about the hanyou's head, one that he could not silence no matter how he tried. Just as he could not shut out the sight of them, darkness and light entwined in lustful harmony.
Rating: MA, Universe: Alternate, Status: Incomplete, Category: Chapter Stories, Chapters: 7