I think I know the mismatch source. I did this on a smartphone, and I wasn’t confident there was a way to “drag” images between Twitter and Safari, so I saved the images, then posted THOSE to Danbooru. As you may have guessed, I had no idea that’s what an MD5 mismatch is.
Entrance ceremonyCameraSettingsFocusCelebrating their elementary school entrance ceremonyTwo!Two!1st Elementary SchoolLook over here~ What's 1+1?