On the outskirts of town stands an abandoned house where ghosts are rumored to appear. Hiroshi and his classmates Takuro, Takeshi, and Mika pay the house a visit, only to be attacked by a bizarre monster, the Blue Devil. Will Hiroshi and his friends succeed in answering riddles and escaping the house, or are they doomed to live hilarious lives forever with the Blue Devil in the haunted house?! The courage-testing life of these four friends begins with the Blue Devil who continues to entertain even after death.

[Source: Crunchyroll]

A town in the countryside surrounded by forests and mountains.

Five members of the cultural anthropology club at an old western-style school are trying to come up with ideas for their presentation at the school’s culture festival, when they find a collection of folk tales gathered by a student in their club 40 years ago.

They realize that the mysterious “Bellflower Oni” that appears in the folk tales may be the basis for the popular free game “Aooni”, and decide to make that their theme.
They manage to make contact with the author of the Aooni game, but he dies mysteriously soon afterward.

The club members become suspicious at the author’s death and began to investigate on their own, but encounter a secret they never should have touched: a secret underground prison in the school.

For some reason all the fire doors at the school are locked, and they are trapped in the school.

The sound of the strange footsteps they hear soon turn to their screams…

A new tragedy of the Aooni is about to begin.

[Source: Crunchyroll]