Thanks for the direction, guys. I was able to get into the basement of Osaka house, but now I cannot get into Kiryu house. The walkthrough I'm using says I should've had a second fight with broken neck woman on the bridge, and although I didn't, I did see her stalking Mio on the high walkway.
I gotta be honest, my enjoyment of this game has deteriorated to the point where I'm about to give up completely. I may jump into the Wii version for a little bit to see how different it is, watch the rest on youtube, and call it a day with this one. I can't stand running around trying to trigger some ultra-specific thing with these over-complicated walkthroughs being of absolutely no help (I searched "kiryu" in the one linked above and there are 175 instances of the word). Sucks because I felt like I was cruising through this game until I hit chapter 5.
EDIT:It's as if the souls of All Gods' Village heard my cries because I felt compelled to google yet another walkthrough and I found the one linked below which seems really cut and dried. I was able to open Kiryu house and I know as soon as I step through the door, Chapter 5 will finally be over. I'm about to take a walk with my wife so hopefully a nice break will clear my head and I can proceed this afternoon and make some real progress.
https://www.ign.com/faqs/...terfly-walkthrough-448464