I grew up as a slave, but it is said that I am the emperor's lost daughter.

The maid, Rosite, is abused for having divine powers, and is eventually framed and killed.
Because the special woman with divine power had to be the duke's lady Karina Hana.

In front of her returning home, the Duke of Identino, who has come to find the 'lost daughter of the emperor', appears.
It is said that the princess has 'sacred power'.

Everyone says that Karina, a 'real saint', is a princess...

“You cannot be her daughter.”

“I like you more than him. I want you to be my little brother.”

“Miss Rosite is definitely a princess. I will swear allegiance to Miss Rosite.”

Most importantly, Rosite is the emperor's lost daughter.
The youngest princess with stamina, a project to regain her place!