Karasu wa Aruji wo Erabanai

In the world of Raven and Crow which is known as the Yamauchi world and ruled by the Yatagarasu clan. They have a special ability to transform their body into the crow. The ruler of this world decided to select their next prince who is a young beautiful, Yatagarasu boy, Yukiya. He handles all of this very perfectly and then something strange happens, a relationship between Salve and Master.