Masafumi Yamada

A man and a woman wake up in a hospital room. She's a nurse, he's a patient. Problem: a large metal object on his back. While the woman tries desperately to escape, the man experiences an inner struggle on the borderline of dream and reality, sort of. What has happened before?

Each player in the game of hide and seek plays the game alone in their homes or apartments, but they can communicate with each other via computer and text messaging. Each one of the players must perform a ritual to summon a ghost, and then they must hide from it to experience the thrill of being tracked by a spirit. If the ritual is not performed in a very precise manner, the person is murdered when the ghost finds them.

High school girl and four other people were forced to play a X-game to take responsibility for what they did in the past. (imdb)

Sayo moves from Tokyo with her mother to her grandmother's house in the country. On her first day of school as a transfer student, she witnesses her new friend Maho getting bullied by her classmates. However, she fails to save her due to fear of being the odd one out. When she returns home, she becomes worried that Maho was trapped in the school bathroom. Soon, she discovers that Maho has died... (mydramalist.com)

Facing goodbyes and graduation, Naomi Nakashima, her childhood friend Satoshi Mochida, and their classmates, are clearing up after their last ever cultural festival, when horror buff class representative Ayumi Shinozaki decides to perform Sachiko Ever After so they will stay friends forever. Instead, they were whisked away to a haunted graduation ceremony for Heavenly Host Elementary School, forced to close after a series of gruesome murders. What fate awaits Naomi and her friends...? (imdb)

The Kisigari students return to Heavenly Host Elementary where if you die, the memory of you will forever be lost. (imdb)

Nine people are locked in a secret room. The nine people are complete strangers. From a speaker, "Werewolf killed and ate the village people" comes out. Blood splatters from a man's neck. The eight remaining people panic. A man in a mask then appears and announces that the Jinro (Werewolf) game is starting. The people locked in the room finally realize they do have something in common. All of them were involved in some way with idol star Ena Eto's death. Her body was found a few days ago.