Kurayami and Tomoshibi

Tyrin Saki's spirits. Unknown why there are two of them, but they each reside as two seperate swords when released(Black and White). It is also unknown what they're abilities are.

Kurayami is almost exactly like her master. She wears all black and has black hair and eyes. She makes constant attacks at her master for acting out of order and insults him whenever she feels like it.

Tomoshibi is the opposite of Kurayami. She wears all white and has white hair and eyes. She is very straight forward and seems to take everything seriously. At times, she dismisses Kurayami's and Tyrin's arguments.

At times they seem to be injoining whenever talking to Tyrin, however at times they come to a disagreement.

Trivia: Kurayami and Tomoshibi symbolize Yin and Yang. <- This may be a hint to the name of the series!