Last month, I had put out an APB on that mysterious song that Yukari Ito（伊東ゆかり）had performed on what was probably a B-movie spy caper titled "Five Golden Dragons". Despite doing some searching, I still haven't been able to nail down the identity of that song, and so I'm thinking that maybe it was indeed just something that had been put together for just that movie. Perhaps it doesn't even have an officially-known title. But let's see what the future holds.
As I was doing that initial search via YouTube and J-Wiki, I tried out this September 1967 single by Ito titled "Ano Hito no Ashioto" (That Man's Footsteps). As it turned out, it wasn't the song from "Five Golden Dragons" but it has a similarly romantic Mood Kayo tone with some fine brass.
Written by Mieko Arima（有馬三恵子）and composed by Jun Suzuki（鈴木淳）, "Ano Hito no Ashioto" is a slightly mournful ballad about a woman who misses the love of her life dearly and knows him so well that she can peg him just from the sound of his footsteps. No idea about what happened to the lad but regrettably for Ito, it sounds like he may be gone for good. I can just envisage her standing at the end of some foggy pier at night, just to bring in that well-worn Mood Kayo trope.