Nagayama Shu, who traveled to Japan, has a sister and a house, and both parents died. Originally, I just wanted to spend high school and be admitted to the University of Tokyo in peace, and then live a happy life with my cold sister, and by the way, manage the dilapidated dojo and become a sword master. But he found out how the school had a golden curly hair and a sea urchin head walking arrogantly in the corridor, but this appearance was really exaggerated. And as he walked down the street, there were a few bald heads passing by, and from time to time there were a few fools in black school uniforms shouting, "I'm going to stand at the top of the lily of the valley!" This kind of secondary two discourse. "No, my most beloved Ou Nesan, how can your bamboo knife swing frost..."Nagayama Xiu, who watched his sister casually swing the bamboo knife and actually froze on it, asked dumbfounded.