Start with the Big Guys

In a world of martial arts, a time-traveler with the summons of flesh and blood goes from a farmer to a gangster to... How far and high can he go? Can a third-rate master who can block ten with one person to a top-notch master who can block a thousand with one person, be able to stop the steel legion wearing full steel armor and carrying a steel crossbow? Or, can a cannon be used to kill a one-person army of innate masters? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.