Samurai Build?

I bought the game day one but due to me not having proper acces to a PC for quite some time I never got to play it properly. Now that I have a PC that allows me to run the game with ez, I want to know if it´s possible to do a Samurai or Ronin build. Is there a Katana in the game and maybe even a straw hat or anything that resembles the clothing of a Ronin / Samurai?