Mr.Sakashita

Personality
He used to be a formal teachers with love toward childrens. However, short before his death he built up his disgust to them due to a false assumption of sexual abuse on him from his students.

Synopsis
He was a teacher at Tokikoudai Elementary School (Yayoi's school), but got fired due to an assumptions of sexual abuse from his students. Since then, everybody started alienating him. He got bulled from other students and teachers. Even his wife left him with their child. All of those directly led him to choose killing himself with a curse. Later on, when Yayoi participates in his game with her classmates, she breaks the curse and exorcize his soul.

Powers & Abilities
In Tokikoudai Elementary School, there is a locked room called 'the forbidden room'. When it is opened, everyone inside the school will faint and anyone around the room will be forced to play Mr.Sakashita's game. Then, every participant will wake up in a place similar to Tokikoudai Elementary School, but it is created by Mr.Sakashita in another dimension. Before the game start, they will see his memories of the reason after his death.

This game is similar to hide and seek, Mr.Sakashita will be the seeker and the other participants will be the hiders. The area of the game is the created school. In this game, Mr.Sakashita will find the hiders, if he see them and blow his candle, the player's soul will be shattered by crows and then captured by him. When a player lose, it is marked by the photo of that player in 'the forbidden room' will be burned. Once the soul being captured in this game, their body in real life will be unconcious and unable to control their behaviors. For the hiders to escape from the game, they have to get to 'the forbidden room' and take their photo before Mr.Sakashita sees them and blow the candle.

Note that in game, Mr.Sakashita is not unvulnerable, since Yayoi is still able to damage him with a bat wraped in black rope and with The Spirit in a Transitional period. However, he is immortal by creating new body once defeated.