I woke up and was transported to an unfamiliar palace!? I don't know what's going on, but this must be an otherworld reincarnation! Apparently, I'm of super high status, and I don't have to work… My life is definitely a winner's paradise! A huge victory!
I Thought I Was Reincarnated As A Villainess, But It Was As Marie Antoinette is a completed manga by Koide Yoshito, first published in 2020. It blends historical, romance and drama. You can read all 3 available chapters of I Thought I Was Reincarnated As A Villainess, But It Was As Marie Antoinette online for free on MangaPulse; the newest is Chapter 3, added 2020-12-24. The series is finished, so you can read it from start to end in one go.