UB (Unlimted Blue), a legendary organization amongst the world of intelligence agencies. They do no belong to any country nor individual groups. Whether its the number of members or their whereabouts, all information about them is unknown. A secret organization known as the "other United Nation", sworn to protect this blue planet from chaos that threatens to destroy its peace.
The story unfolds around one of the top nine agents in UB, operative number 9, Code name: Musashi, and a young man named Shingo.

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Exotic. Smart. Lethal. Musashi #9 doesn't live the life of a normal teenager. Her's is full of intrigue, violence, and death.

Some people want to change the world. This sixteen year-old girl can. Deep ideological, religious, and social differences drive the world closer to destruction, and the innocent masses suffer while politicians huddle in safety.
One ultra-secret organization is committed to preserving world peace, and their top agent goes by the code name Musashi #9. This agent battles terrorists and extremists, while bringing hope to the people she saves. The world may be a dangerous place, but it's a whole lot safer with Musashi #9 in it.