Sasebo, Japan in March 1969 was a very wonderful town. When I had some time off I used to wander through the streets with my trusty little half-frame Olympus Pen. The scale focus mechanism was new to me and it took a while before I learned how use it in conjunction with the aperture. I learned to see in the children how life treated the rest of the town. Today you can bring a lot of grief on yourself if you take photos of children. How times have changed.
I saw number four first then it take me a while to understand that you posted multiple image od children taken long ago with special camera. Sometimes is hard to understand what you do, then everything become very clear. I think you already know about focus problem. Maybe your new series will be very sharp, yes?