Empress? Empress!

Story

Ever since being transported into the world of a book she read, Leana has had one goal: stay on the emperor's good side and avoid being sent to prison! Sure, she agreed to marry him and become his empress consort for a pampered life of luxury, but she's determined not to make the same mistakes as her antagonistic story character. But for some reason, things in the story keep changing -- new characters, unexpected events... Can Leana get this story back on track, or is she in for a plot-twist?

Synopsis via AniList (English).