Just a small note. I understand it would be pratically impossible to have voices. However, would be nice to have a small change in the background sound. Don't get me wrong, the background music is nice, and even improves the gameplay experience when comparing to no sound, but after a while it still gets somewhat tiresome to listen... unfortunely only Koji Kondo can do that magic with Super Mario or Zelda music it seems.
Again, as I said above I'm not expecting something like voice actresses, however some change on sound would help immensely. Stuff like crowds, cars, buses, sea sounds, train, wind, crickets or even the girls laughing or giggling (or even moan wink wink) would be fun.
The theme "why I can't see no one at streets is a smart way (and sometimes fun to read) to explain it. It give (strangely) a nice and different vibe. Still, even there it feels the sound could have a bit more. There are some sounds that can even be used for pure comedy value.
Just to reinforce, the background music itself isn't bad. I didn't even care about it when I played this on the first release, it felt nice. And it still does, however after playing it on loop for some hours... yeah...