Invited by a group of boys who came for a test of courage, the heroine joins in on overnight ghost stories at an old shrine.
In the middle of the hundred ghost stories they discover a hidden door inside the shrine.
After descending into an underground passage, what they found over there was...
Legends, local deities, sacrifices...
They thought that every one of these stories were written as part of an old, forgotten legend.
However, because of the mark of sacrifice left on the young girl's body, once again they will be visiting these grounds.