Monster Tales - Nightmare Episode 8 “Shitaimita”

High school on the hill.
In the summer, the smell of iron rust and damp grass began to rise from under the floor of the baseball club's old club shed.
Captain Shinoda, ace Takikawa, catcher Izawa, and Miyasaka in one year disappear one after another due to inexplicable events.
The psychic mediator called by the department points under the floor and says “it's buried in the soil,” but it wasn't dug up.