The Unborn Yokai follows the story of two teenagers named Aeris and Dante. After hearing a rumor about a tunnel containing a yokai, they go to investigate for the fun of it. The main threat, Onryo, is a powerful yokai that possessed Aeris's body and became a danger to society. Now yokais and the exorcist group "Free Soul" are after him, trying to kill him. Will he survive or get executed...?
