Yui Toko is not your average 17 year old girl. For one she is the oldest child of Queen Miya and next in line for the crown. She is also the ruler of the vampires, vampire hunters, gods/goddesses, angels, demons, and Grim Reapers which are usually rivaling clans but have been brought to peace because of the fact they each share a queen. She also runs a successful sweets company called TokoSweets. She is the most powerful being on this planet and was born with a lack of emotions. She has them of course but she doesn't feel them as much and is quite numb to most emotional things and physical too. One day she is accepted into Cross Academy and the characters from Black Butler and Ouran High School Host Club magically appear in her dimension.