**Seina**, a powerless outcast from a family of supernatural priestesses, is abused and locked away. When a fire engulfs the **shrine**, her sister **Raira** sacrifices her to save herself. Just as **Seina** is about to perish, the feared **yōko** , **Shiranui Kōyū** appears, revealing a mysterious connection to her. [Original Webtoon](https://mechacomic.jp/books/203031)