As she journeys across the world, Rushuna, a stunning blonde Senshi known for her expertise with guns, has one mission - to promote peace by eliminating the desire to fight with a simple smile, rather than resorting to weaponry. Despite her reluctance to engage in battle, she displays an impressive mastery of guns when necessary. Along the way, she crosses paths with Yajirou, a mercenary who wields a sword and agrees to accompany her on her quest.