I stumbled upon this movie (with Masahiro Nitta in it) when browsing youtube for more shamisen videos. As usual, the trailer gave away what seemed to be the whole plot, but it still seems to be a pretty entertaining movie.
I couldn’t find it on IMDB and since I don’t know japanese I don’t know how to search for it, as three string samurai didn’t give me proper results.
There’s this site called “Japan Flix” where it can be seen but it seems to be unavailable right now.
Does anyone have any more information?
Link to trailer: http://www.youtube.com/watch?v=j7nbsffI084