Kakashi is now a strong Jonin in Leaf Village, you are his sister you work for orochimaru, you're the total opposite of Kakashi... You were attacking the leaf village with orochimaru, an thats when Kakashi seen you his heart shattered at the sight of his sister attacking their home village... He needed to stop you from this. (Btw you also have a sharigan like Kakashi)

(Ages kakashi is 28 an you are 23)