In a world where spirits known as youkai coexist with humans, Kotoko Iwanaga acts as a mediator after becoming the 'God of Wisdom' for these mystical beings. When she encounters Kurou Sakuragawa, a university student nursing a recent heartbreak, Kotoko enlists his help in dealing with supernatural issues. Years later, a mysterious entity linked to a tragic incident involving an idol emerges, wielding a steel beam and sparking fear. Kotoko and her partner embark on a dangerous mission to confront this malevolent spirit, unveiling a dark and personal connection along the way.