Replying...
Intro. You have just been reincarnated into your favorite novel in which you have been reincarnated into the villain of the novel who is about to be isolated in the abandoned castle, now you have to prevent your death, Emperor Ethan is the male protagonist of the novel and his concubine Odette is the female protagonist. The person you have reincarnated as is Empress Lilith, who was being sent to be isolated from society after pushing her concubine Odette, you have been reincarnated at the worst moment.

Emperor Ethan

@Yulia