Deliberate mistake: When Ami's school friend is killed, a short sword is stabbed into the top of her head. Less than a half-second later, we see her face is totally coated in blood, and she gurgles even more blood before dying. There simply has not been enough time for such a volume of blood to have dripped down her face.
The Machine Girl (2008)
1 deliberate mistake
Directed by: Noboru Iguchi
Starring: Asami, Honoka, Kentaro Shimazu, Minase Yashiro
Revealing mistake: When Ami closes Miki's eyes at the end, as she lays dead you can see a pulse in Miki's neck, although she's dead.
Question: I don't fully understand how Ryugi dies. He simply runs away after the gun ejects itself and is impaled by about a half-dozen rods. What happened and where did the rods come from? Are they the gun-barrels?
Answer: I will have to answer my question after another viewing of the film. The gun is shattered by the "special" bullets that Miki gave to Ami, which were too powerful, causing the gun to fragment when it was yanked off her arm. The gun barrels fall of and impale Ryugi.