Touka

Touka is an Evenkuruga mononofu (warrior) who serves under Lord Orikakan. She fights using a slim sword of an unspecified variety which she combines with her astonishing agility to execute swift and deadly attacks.
The Evenkuruga are blessed with such extraordinary fighting abilities that many have carved their names in history; they are a deeply moralistic people and side with good and fight evil in the name of justice and honor.

Spoiler

After Hakuoro convinces her not to commit seppuku she pledges fealty to serve as his bodyguard. She obsessively follows this oath, true to her clan's nature.