Mei Misaki has a big bruise on her face after a fight with Izumi Akazawa, in the next shot ,her face is clean, and later, the big bruise on her face is back.
During the fight, Izumi's hair is messed, but when she dies, her hair is combed.
The wound in Kouichi's arm, disappears and reappears between shots.
Crystal eye balls are fixed and always look to the front without moving. However, Mei's eye moves accordingly to her good eye.