Please give up!

Yurina Ouin, who attends the private Hakutori Academy, was delighted that her future was assured as the daughter of a wealthy family in her reincarnated world. However, on the day of the entrance ceremony for the middle school division, she realizes that the world she has been reincarnated into is that of a shoujo manga. To make matters worse, she has been reincarnated not as the villainess of that shoujo manga, but as her younger sister. If things continue as they are, she will be socially destroyed because of her sister's misdeeds. Yurina resolves to stop her sister's evil acts in order to enjoy her second life.