There are two MA fics I'm looking for:

The first is where Sesshoumaru was cursed to grow colder because he turned down a witch's affections. It was only through intimacy with Kagome that he was saved.

The second is similar, but Kagome was found freezing by Sesshoumaru after being separated from her companions. In order to save her, Sesshoumaru intimately connects with her without taking liberties. It has a lot of meaning to him and he feels somewhat guilty for doing it without her being conscious.

Any help would be appreciated!

I do believe that the second one would be Through the mirror by Sidhe, rated NC-17 on Spark, most likely MA here, so no YIMs

http://dokuga.com/spark/story/5463/1

Edit: Should have checked before I posted - available inthe Dokuga archives as well, and with more chapters

http://dokuga.com/fanfiction/story/3149/1

The first one might be:

Not Impervious by Oroyukae

Rated: MA (definitely not for YIMs!)

Summary: He was supposed to be the most powerful demon in existence; one that none could best in any situation, at any time. That was not entirely accurate, it would seem. One error in judgment at the most vulnerable of times, and all that he knows lay in jeopardy. Just what would said being be willing to agree to in the direst of circumstances?

Thank you both so much! Those are the fics!

You're very welcome, dear! Glad I could help!