Just like the title, this story heavily regarding to 'Pride and Prejudice' novel by Jane Austen. The story just slightly similiar, but from what I remember, the novel itself was given to Sesshomaru from the past by Kagome.

This story is CU and rated M-MA. Kagome came from the past and found that she must undergo some miko's training, not just for the battle with Naraku, but to face the Demon Society too. She eventually found that her 'teachers' were no others than Sesshoumaru, Shippou and... Kouga (maybe?). In modern era she eventually began to courting with Sesshoumaru, that angered Seshoumaru from the past. He (Sesshoumaru from the past) even try to mark her by force when Kagome rejected his advance by said that she already betrothed in the future. in the end, Kagome stays in Modern Era, but before she gone, she gave the 'Pride and Prejudice' novel to Sesshoumaru from the past with some explanation that the one she berothed to was no other than the future himself..

Can anybody help me find this story?

Sounds like you are looking for TiggyToggy's Finding Her Strength (Rated MA, no YIMs).

He goes by sesshoumaru Darcy in that one right? Because of the book she gave him.

Yup.

Thank youuu!