The more I watch this guy's films the more I like his works. may be "Another lonely hitman" or "onibi" are not action-packed or stuff like that, but they are great movies, may be on downbeat side though.
By the way, Mochizuki's parents must have had rather weird kind of humor to give their son such a name (Rokuro means "rock-n-roll" and as far as I know it is his real name). Then, the man wotked in porn cinema before moving to mainstream and making those wonderful films. I wonder whether it is possible for a talented filmmaker in the West to make such a transition.