Oohhh I get it
Spoil ?
Realiana is inside of Beatrice cause what if she was the main character and the one who appear and said I can change it for you then Beatrice became gloomy when her personality should be cheerful like in the book and that cause the female lead to go to realiana body
(⌐■-■)I'm sorry I'll shut my mouth now
All mighty hail for reader's wish.(づ ̄ ³ ̄)づ