月光 (Gekkou; Moonlight)

In every possible way, the blade defied what they could've possibly known about tsukumogami and swords. She was female to begin with. Her way with a sword was the opposite of what one considers right. So she hid behind a mask. A learning Saniwa. She would "arrive" at the citadel as a sword at a later date.

The Saniwa had a job. They knew what they were supposed to do and why, yet they went against the original plan. Secrets would be kept. Have to be kept, if they, and their citadel were to remain safe.

They needed revenge. After what the government did to them, they had to fight. The government declared war on them. Everything was perfectly in place, until the mutiny. Which was why the Saniwa had to be put under.

Ookurikara's return to the citadel did little to improve the grave atmosphere. Yet, the more uncovered secrets he learns, the more dangerous it becomes. Not for just him, but the whole citadel. And it's leading back to one thing: the sword Mizu-ni-Gekkou. The sword who remembers nothing, not even the smith of her blade. Only glimpses of the ocean, and nightmares of screaming. He never understood why Saniwa-san was so adamant on getting him to open up. Perhaps she was like Mitsutada, concerned about his team working. Or maybe there was more to it...