The Heroine's Reincarnated Sister is a Brother Complex ~The Otome Game Won't Begin~

"Oh, my big sister is the heroine of Kimito Ki. Lillia, who remembered her past life a few years ago, recalls that the world she is in is the world of an otome game, and that her older sister Rupia was the heroine. Once she realizes this, she won't let her beloved big sister go to the Royal Academy! Long live happiness close to home!"