Kiba Koumori

Appearance
Shi to Ai no Batto has a white hilt with a red diamonds going down the middle,the blade itself is made out of onyx with diamond edge.

Abilities and Powers
So is it your typical weapon?

Higher grade? Magical powers? Turns into a creature that strike all those who dare to mock it?

History
So........how, what or who made it? How did it come in into your character's possession? Used for good or evil?