Review Detail of Concubinebeauty in Reincarnated as a Duke's Fiancé

The writing is really good and the author does a great job when writing the characters. The setting is also very unique and up to where l read, everything was really shrouded in mystery. The only thing l don't understand is how the relationship between the male and female protagonists can improve so fast. Anyways, l highly recommend this for those who like romance.