Kobayashi didn’t think he’d get caught

Well, this sort of changes my opinion.

I’m guessing that since he didn’t expect it, he was so humiliated by being caught that he hoped to die quickly, to escape his embarrassment.

I’m not going to say that he “deserves” to die. It’s beyond my ability to judge what a twisted person like Kobayashi deserves. I just hope that whatever he gets keeps him off the streets for good.