During the age of Japanese Civil War, the faithful samurai Yajiro Torajima
is surrounded by an enemy army. At the last moment, the bountiful Rushuna
appears and saves him with a smile... and a high -caliber revolver. She is traveling across Japan in search of a way to bring an end to war. Yajiro and Rushuna challenge countless opponents with his sword and her talent for reloading on the bounce.
Rushuna is a blonde and very beautiful Senshi (gun expert) that travels through the world with one purpose. Which is to make the world a peaceful place by, instead of fighting with weapons, taking away the people's will to fight by giving them a smile. Although she doesn't want to fight, she is forced to, and shows amazing gun skills. In this journey she meets Yajirou, a mercenary that uses a sword to fight and joins her on her journey.