I've seen the first three episodes so far, and I still don't know if I like this show, or if it's just a decent enough time waster.
I like seeing Sato Koichi in the lead role, mostly because I've never seen him play anything other than a bully or a bad guy.  "Shinsengumi" & "When the Last Sword is Drawn".  
As for Nishimura Masahiko... are they allowed to do a dorama in Japan without him?  The guy is in everything.  Fortunately, he's not a negative, because the guy is a heck of a character actor.
Other than those two, no one is really standing out for me yet.  (And in truth, I only notice those two because of their past work.)
Well, three episodes isn't much.  I'm hoping they're heading somewhere.[/b]