Tamaki Kasuga

Tamaki Kasuga  is the main protagonist of Hiiro no Kakera. She is the only one who can seal the Onikirimaru, since she has the blood of the Tamayori Princess coursing through her veins. Tamaki has the abillity to see different spiritual creatures as in the fox spirit, O-chan. As Tamaki begins to awaken as a Tamayori Princess, she begins to see other spirits wandering around. Tamaki can also use sealed items in which her grandmother gives to her. These sealed items hold a strong amount of power to take down Logos for a short amount of time. She is mostly powerless for Season 1, although she always does everything in her ability to help the guardians.  (source : wikia.com )