Anime Profile: Moribito: Guardian of the Spirit

Guardian of the Sacred Spirit is an anime about a woman named Balsa who is a spearwielder from a country called Kanbal. Balsa is somewhat of a bodyguard who protects other people for atoning for her past sins. In a country called the New Yogo Empire there lives the Emperor who vows to have his second son Chagumu assassinated for holding an egg of a water spirit inside of him which, in turn if left alone, will eventually hatch and a drought will overcome the New Yogo Empire.

When Blasa enters Yogo here she meets the Second Empress who is the mother of Chagumu. There she knows the Emperor wants Chagumu dead but instead asks Balsa to protect him with her life. And here is where Balsa becomes Chagumu's bodyguard.