If you're looking for some unique short horror anime, there are definitely a few gems you might want to check out:
1.
Paranoia Agent - With only 13 episodes, this series created by Satoshi Kon blends
psychological horror with social commentary. It revolves around a mysterious figure known as "Lil' Slugger" who attacks people across Tokyo. What makes it stand out is the way it gets into the fears and anxieties of its characters, increasing in intensity with each episode.
2.
Another - This show consists of 12 episodes and is a classic when it comes to horror anime. It follows a cursed classroom and the deadly fate that befalls its students. The tension builds up really well, and the atmosphere is thick with dread. The unique twist comes from the mystery behind the curse itself, keeping you guessing until the very end.
3.
Shiki - At 22 episodes, it's a bit longer but definitely worth mentioning. It explores the invasion of a small village by vampires, but it uniquely presents the moral ambiguity of both sides. The series tackles themes of humanity and monstrosity, challenging the viewer's perceptions of good and evil, which is a refreshing take on traditional vampire lore.
4.
Yamishibai: Japanese Ghost Stories - This is a series of shorts, with each episode running around 5 minutes. It's styled like a classic
kamishibai storytelling format and features various
ghost stories steeped in Japanese folklore. The unique art style and concise storytelling make it a standout in the horror genre.
These series not only deliver on horror elements, but they also provide intriguing stories that dive deeper than typical horror tropes. Happy watching!