One thing I kept thinking about...
To be honest, more than finding out who the killer was I was interested in knowing if Do-joon really had slept with his mother. There were a couple of scenes that were ambiguous, but still struck me as kind of strange. For example, mother walking up to Do-joon when he's peeing and staring at his penis, when Do-joon comes in late and puts his hand on her breast as he gets into bed, or perhaps the most convincing -- when one of the two boys that Jintae beats up asked "Does he just sleep with her, or does he *beep* her?" -- resulting in Jintae getting visibly angry and kicking him in the face.
I mean, if they didn't want us to at least think about this they wouldn't have planted these scenes. What are your thoughts on their relationship?
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