One day I gain my memories of my past life and... Hm? My adorable younger sister is the heroine of a fantasy novel? And I, the jealous villainess must make her life hell, so that one day she can be saved by her princes? How can I bring myself to hurt my fluffy bunny? But... I must. For her happy ending, I will brave the role of a villainess. ... That's good and all, but why isn't it working? *my own work, do not copy*