"Kyokou Suiri" (also known as "In/Spectre") is a Japanese novel series written by Kyo Shirodaira, which has been adapted into a manga and anime. The story revolves around Kotoko Iwanaga, a young woman who became the "Goddess of Wisdom" for supernatural beings (yokai) after suffering a loss of her eye and leg in a deal to mediate between the human and supernatural worlds. She partners with Kurou Sakuragawa, a university student with supernatural powers, to solve mysterious cases involving yokai. The series blends mystery, supernatural fantasy, and romance. The anime adaptation aired between 2020 and 2023. It is noted for its interesting characters, especially Kotoko's strong and strategic personality, and its unique take on folklore and yokai. The story explores themes such as the intermingling of truth and fiction. While it received praise for its music, voice acting, and character design, some reviews mention the plot can become stretched and the anime may lack depth in storytelling at times. "Kyokou Suiri" has a distinct charm with its blend of supernatural mystery, character dynamics, and thematic exploration of reality and myths.