Synopsis: A Raven for All Seasons

In the land of Yamauchi, a world dominated by "Yatagarasu" instead of humans, it's time for the Crown Prince to choose his Queen. Four princesses are sent to the palace by four great noble families who are fiercely fighting for power in the Imperial Court. They all have their own reasons for wanting to become Empress, and many shocking developments happen along the way. In the end, who will be selected by the prince?