I haven't heard that my best friend, a beautiful girl who lives in the great temple of Petra, is actually a boy and is an illegitimate child of the Imperial Family! (1) / Mikazuki Sankaku Sága Forest

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

The eight year-old Duchess Petra Huxley, who noticed that she had been reincarnated as the villain of the Otome Game, decided to escape from the Duke's house before she bullied her half sister, her heroine.
As a result of helping many people in the slums to develop her natural healing powers, Petra became an apprentice saint at the age of nine and lives in the Great Shrine.
Just as she started living in a new environment, Petra met a beautiful girl of her age, Berry, in the Great Shrine's garden. Berry was a callous, unmoved, non-talkative, doll-like child.