A college film club rents a vacation house for a few days to film a short movie and have a mixer. A zombie outbreak forces them to barricade themselves within the house, but one of the survivors is killed in a locked room. No human could have inflicted his injuries, but no zombie could have gotten into his room.
Asshole Victim: The four victims are set up as jerks even before the zombies appear. The narrator discovers that two were deeper than he'd at first thought; he doesn't want to learn more about the other two so he can continue to think of them as trash.
Closed Circle: Mentioned in the story
Decoy Protagonist: Akechi is set up as the detective. He's killed at the start of the outbreak.
Everything's Deader with Zombies: Especially mysteries!
Genre Savvy: Shigemoto is a fan of zombie movies.
Mystery Magnet: Hiruko mentions crimes often occur around her.
No Zombie Cannibals: Justified; zombies attack to reproduce, not to feed.
Staking the Loved One: Hamura wonders what he will do if he has to do this to Akechi. Shindo is killed by Reiko because he couldn't do this to her. Inverted: The killer has Tatsunami zombified so she can kill him twice. She is also happy that she gets to personally kill the zombified Deme.
The Unfought: Zombie Reika, Deme, and Akechi appear later in the story. Zombie Kudamatsu does not appear.
The Watson: Hamura. Somewhat subverted; he helps cover up for the killer partway through.
