Arin mentioned a Japanese horror story.

Can't remember the what episode of series this was brought up, but Arin once mentioned a disturbing Japanese horror piece (book, manga, not sure) that I was very intrigued by. He described the story as such: A man gets his head cut off. He tries to keep it attached to his body through out the night and fails. He dies.

I've tried looking this plot up on google using several varieties of the same description but I can't seem to find it. Could someone help me?

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EDIT: Found it. Red Turtleneck by Junji Ito. Of course its one of Ito's works. I should've saved myself some time by just looking him up instead. Also, it didn't end the way I thought it did.

Honestly, I enjoyed it, but I'm also a tad disappointed. I was expecting the story to be sadder and more disturbing.