Is my bleach zanpakuto.
Kanojo wa chi no ame o tsūjite nozonde imasu
She who wants through blood rain
Even though she is a zanpakuto she is meant to be willed by a Espada or rather a hollow.
A long time ago Ketsueki Nami was a warrior woman who loved her Lord and Master. So much so that she would kill anything and everything to protect her Lord and master. Before she died she killed and destroyed and decimated an entire Army by herself. Her technique was to cut upward so when she cut someone it was as if she was dancing in the rain of blood.