Shuri

The youngest son of the Emperor, he rules over Saikoku (western Japan) which includes Chugoku, Shikoku and Kyūshū. Though he is merciless to his enemies, Shuri is a capable ruler and very proud of his realm. He has a big-hearted, free-spirited personality and is generally quite personable, though he tends to be overly competitive. Shuri is an expert swordsman.

[Spoiler] In the early parts of the story Shuri stands out as brutally cruel to those who do not obey him, because he is responsible for the destruction of Byakko Village and the murder of Tatara.

Later he meets Sarasa, unaware that they are enemies, and falls in love with her. [/Spoiler]