第 1 集: 武士撤退，擅長使用槍械的女子從敵軍手中救下 Yajiro。

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The anime starts with a scene of war: samurai (swordsmen) vs senshi (people that use guns). More than half of the swordsmen get killed. Yajirō Kojima, the leader of the attack orders the retreat while trying to get the senshi attention to facilitate the others escape. While running he`s cornered and injured, then he hides in a hot spring where he meets Rushuna Tendō who claims to be just an ordinary traveler. She saves him from getting caught by the other senshi, then he departs while warning her that this road is dangerous. The second attack over taking back the castle fails as well. Rushuna appears again and saves Yajiro from getting shot then shots the others, revealing that she is a senshi, a very skilled one. She manages to save the master without killing anyone, as she was taught by a woman revealed at the end of the episode. (Source: Wikipedia)