Very creepy and scary horror. Not very long as it lasts 4min and has 13 episodes. That will be your scariest minutes of your life ;_; I got goosebumps everywhere!
The anime is only about 13 different horrifying stories which you willl never forget. There're different characters in each episode. Don't be distracted by the graphics. It's like a stop motion animation (dunno how to describe it XD), but it's okay as the whole stories are very interesting, so you definitely won't be bored.
Have fun with watching this if you dare >:D