How does Musui try to make money?

Some of Musui's "get-rich-quick" schemes include: stealing rice money (essentially taxes paid by peasants based upon the amount of rice a fiefdom produces) from his administrator brothers; offering "protection" in exchange for gift money from brothel owners and vendors in the pleasure district; masquerading as a holy man who guesses lottery numbers for peasants in exchange for donations; buying low and selling high in respect to swords and military goods; and lending money to gambling friends at high interest.