The Struggle of the (Temporary) Villainess. I Realized I’ve Reincarnated Into Another World So I’ll Break off the Engagement and Find My Soulmate

"'Conviction event!' ―― You are certain these are her words?" The Moon Princess, Lady Rebecca Howard, has recalled the memories of her past life on the night before her graduation ceremony. It seems that this is the world of an ~Otome Game~ with the Saintess Candidate, Miss Charlotte Silva, as the protagonist. Charlotte is aiming for the fiance of the second prince who is... mine? So I, Rebecca, have the villaines...