I saw this movie when it was first released to theaters in the US in 1975 as Inframan. The mid 70s were the days of Johnny Socko and Ultraman, so Inframan kind of felt like a souped up version of those.
The fact that I remember seeing this movie so vividly, even after 28 years have gone by, should be some indication that it's at least not humdrum. Sure, the monsters are fake, and the plot is ludicrous, but you aren't MEANT to take Inframan any more seriously than you did Ultraman (if you ever watched that show). This movie is nothing more (and nothing less!) than campy Japanese techno-samurai heroics at its Technicolor best.
Inframan does amazingly gymnastic things and defeats amazingly craptacular foes, and does so with great style and lots of intense colors. Though I was too young to have tried any hallucinogens back in 1975, I can say now, after more life experience, that this IS the kind of movie you would greatly enjoy while on hallucinogens; and even if you aren't tripping when you watch this movie, you'll get some of that same feel anyway. It's just that kind of movie. ;)
