Behold the activities of the coolest woman in the world, Musashi! What is the mysterious organization UB, which runs the world's history from the shadows and is also known as the "United Nations of Darkness"?
Musashi is an elite member of UB with overwhelming beauty and strength. The latest in the "9th Musashi" series about her exploits! She travels around the world, but this time she takes a vacation for her boyfriend, Shingo Tachibana, where she meets Keita, the boy who tried to attack the embassy...?