Continuity mistake: Whilst Mima is filming a scene at the harbour with another actress, in the first shot, Mima and the other actress are standing back-to-back. But in the next shot, the two are suddenly standing side by side. (00:49:29)
Continuity mistake: When Mima is having tea with Rumi in her apartment, in the shot Rumi tells Mima she was at the apartment yesterday, Mima is shown holding her cup with all of her fingers, but in the next shot, she is only holding the cup with two fingers. (00:54:40)
Continuity mistake: Whilst Mima is shopping after cutting herself on a broken cup, the logo on the bag she is holding has a full stop in between each letter, spelling the logo as "F.G.G", but when she finds the bag in her wardrobe later on, the logo now has no full stops in between the letters, with the logo now being spelled as "FGG." (00:55:13 - 00:58:25)
Continuity mistake: When the stalker has Mima pinned against the floor of the set, in a wide shot, his right hand can be seen holding onto her lower arm. It then cuts to a shot much closer to them where his right hand is now holding onto her hand. (01:04:14)
Continuity mistake: In the shot just before Mima peeks behind the curtain to see the train tracks right beside her apartment, on her bed there is a pink heart-shaped pillow and a purple heart-shaped pillow placed on top of it. Later in the scene, when Rumi (or the other Mima) starts attacking her just before she falls onto the bed, the two pillows are now in two separate positions. (01:09:35 - 01:11:13)
