In the alternate world of the Yantagarasu clan, known as the Yamauchi world. The people of that world can transform their bodies into human and crow shapes. The king of that empire elected his Youngest son as the prince to rule. Yukiya was a beautiful young boy then he started to encounter various events in the conspiracy. He fell in love with a slave and created a strange relationship between master and slave.   烏は主を選ばない