This is a story of trivial friendship and separation intertwined with numerous mysteries. The mysteries of "Tsukuyomi's Transformation into Water" that can make you rejuvenate, "Song of the Other World" that can never be read aloud, "Reverse Theft Book" that is a book of unknown origin that is unknowingly placed on the bookshelf, "Wonderland Strange Stories" that records the disappearance of the gods... What is happening in this small town at a central station in the capital... In the last maze left in the world of Reiwa, Touko Ogawa, a "modern mystery" who aspires to become an insignificant novelist, and her partner, the childlike and delicate demon boy Hino Ren, have launched a challenge! The pursuit is the victory of supernatural knowledge and physical strength. What awaits the two who have solved the mysteries that have emerged in this town is...