Shimazu Toyohisa was a young hero active in the late Warring States period. During a retreat, he was seriously injured while trying to protect his allies. Unexpectedly, in the blink of an eye, an unknown person appeared in front of him and opened a door to lead him into another fantasy world made up of many different time and space. From this moment on, he became a drifting samurai who cooperated and fought with many historical celebrities in this new world, and then showed his skills!