Emptiness

The Lord trapped in futility after the second soul contract

When Ciel receives a fatal wound from the on-going assault from the demon assassins, Lu decides to attempt another soul contract to save Ciel. Though it was a bet unlikely to succeed, Ciel manages to stay alive. But because of the taxing nature of the contract, Lu's senses begin to dull and her emotions begin to fade as she is trapped in this sense of futility. The fathomless sense of futility manifests as ID and destroys enemies.