Can someone tell me the name of the webtoon about a chick waking up in another woman’s b...

Can someone tell me the name of the webtoon about a chick waking up in another woman’s body in a different world, well same world just a long time in the past and she’s supposed to be the concubine for the king and has a childhood friend who loves her but she falls in love with the Kong’s advisor who has glasses, I saw it on an ad, on it was her past self and now self with her childhood freind and the glasses guy. I thinks it her name as title or something I though I added it to my reading but i guess not,