I've been using PixAI- I've failed to make the diapers look close to diapers(I've just put 'white undergarments' and that's the closest I ever get haha) but I at least have a few characters/scenes that I'm okay with- most do not have any diapers though. Hope you enjoy the story!
Everytime you ever bring this up since I started with the toys and the rest, I always think of just how much you are going to love a few of my future stories. And for the record, yes, I wanted to leave this open for interpretation. In this world, science and technology gone amuck can affect both Bigs and Littles. They call it an accident most likely. I call it karma.