Huh does this guy go frame by frame in every episode of the anime and cuts the heads? If you look at the characters sometimes when there's a closeup to their heads you can see artifacts around the line. The quality of their faces falls flat compared to the rest of the body, not to mention that sometimes they low quality (Like a screenshot). The lines of their bodies also randomly get thicker or thinner.
Anyways color me intrigued but it seems like this story is build on purpose to drag and be milked from that ending.