Seirei no Moribito

Once every 100 years, a Water Fairy implants an egg into a person who then becomes the Guardian of Fairies. This time, the responsibility falls on Chagum, the second prince of the New Yogo Kingdom.
Chagum`s life isn`t easy. The king finds Chagum an inconvenience and attempts to have him killed. As a result, the queen asks a female guard, Balsa, to protect Chagum. In addition to this, beings from another world, known as Nayugu, constantly attack him in order to eat the egg carried in Chagumu`s body.