You're probably right. I was "merging" an article before it had been started and AfD'ed, basically. I supposed we could start the article on the other film with as much info as we have. Someone could put it up for AfD, it could be recommended there that the info be merged here, etc. Or would perhaps just a passing mention of it as in both the Sharp and Weisser texts be appropriate? Something like: "This film is unrelated to the one of the same title scripted by Oniroku Dan and directed by the early pink film SM-specialist Shintarō Kishi at Yamabe Pro and distributed by Kantō in 1967."? Oh this is apparently Oniroku Dan's first screen credit, which ought to confer a little more "notability", though still not enough for a stand-alone article, I don't think. Would be nice to be able to fit that into the sentence. If mention of the other film is allowed, that is.