[A/N: Current author here, I have been waiting an hour for my internet to fix itself before I could post this chapter ;-; and, I will also say, work is kicking me in the balls, since now I have to go into work tomorrow on my day off, basically stopping me from writing the chapter for next week]
"So today I'm teaching you the kyotōryū bare handed style which was developed to defeat a vast variety of blades. Your entire body will be developed to break blades and swords through the training of several moves." He then proceeded to explain the style. Essentially this style was used by the mc of a series called katanagatari which he loved in his previous life.