Am I the Villain Daughter of an Otome Game?

Seravia found out that she was reincarnated as the villain daughter of an otome game. In order not to be retaliated by her yandere stepbrother, one of the game guide characters, she decided to start from scratch and increase the favorability of her brother Finitis. When they first met, the younger brother was shy and hiding behind his father. He had white hair and pink eyes, and was as cute as a rabbit. He looked easy to conquer - but who was going to tell her what was going on with this younger brother? Didn't he like anything? ! Whether it was delicious food, exquisite toys or other interesting things, they all seemed to lack the appeal they deserved in the eyes of her younger brother. Until finally, she discovered that this quiet and well-behaved younger brother actually liked... Bloody romance novels? What's going on, brother, there's something wrong with you! In order to satisfy her younger brother's preferences, Seravia had to write the story herself, using her writing talent as a third-rate romance writer in her previous life, and compiled a series of bizarre and bloody stories... Her brother's favorability increased. After the original heroine of the game appeared, Seravia felt that she was invulnerable and could retire with success. However—— "Sister, you have changed..." "Why are you alienating me... After you personally taught me all your feelings, are you going to abandon me like a broken shoe?" "Why can't we go back to the way we were and continue to be intimate?" In the darkness, approaching her step by step was her younger brother with a sad smile and his eyes gradually filled with thick black mud. As he approached, a large number of purple and sticky tentacles suddenly jumped out from the hem of the robe, and opened their teeth and claws in mid-air... Help, something is really wrong with this brother! *Idiot villain heroine *The male and female protagonists are not related by blood. The emotional line opens after the adoption relationship is resolved. The female protagonist is an unorthodox villain. *This article is interspersed with some short stories created by the heroine. Before chapter 41, it will be marked in the chapter name. If you mind, you can jump to book. After chapter 41, it will be briefly described in 1000 words or less and will not be marked again. If you mind, I suggest you change the book. This book may not be suitable for you. Purpose: To be a kind and honest person