Rushuna is a blonde and very beautiful Senshi (gun expert) that travels through the world with one purpose. This 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 too and shows amazing gun skills. In this journey she meets Yajiro, a Mercenary that uses a sword to fight and joins her on her journey.