The end of fairy tales is always cruel. "Shinigami Hime and the Library of Monsters" is a 2D adventure game in which you explore the Abnormal Library and the worlds inside books to save girls who have transformed into monstrous forms because of their trauma. You control the girl Mono and give commands to her partner Meer to solve gimmicks scattered throughout the book worlds. As the third title in the picture book series after "The Liar Princess and the Blind Prince" and "The Cruel King and the Great Hero", it keeps the series signature picture book expression using analog illustrations while setting the stage in an eerie monochrome world under the theme of a picture book you can play and break. Graphics and directing that draw on picture book elements: the world that the protagonists explore uses stage designs created by embodying the girls trauma. This title lets you experience a worldview that feels as if the analog drawings created by Sayaka Oda have been dropped directly into the game. Monochrome expression based on hand drawn art, storybook style illustrations, and narration that feels like being read to are inserted throughout, and because many elements of the picture book theme are woven in, you can enjoy the sense of immersion of directly interfering with the book worlds together with the protagonists. Gimmicks where you break paper stages to progress: in the picture book world that serves as the stage, you solve gimmicks by destroying or deforming the background graphics. By eating or turning the paper stages, which are made of paper, you break the picture book world so you can move forward. As the story progresses, Mono and Meer also gain skills, so take on the various gimmicks placed in each stage. Grotesque yet cute characters full of contrast: waiting at the far end of each stage are Shinigami Princess girls who have become deformed by their trauma. Defeat them and save them from the changed forms they have fallen into. In addition to the somewhat melancholy designs of these Shinigami Princesses that combine cute girls and monstrosities, many other deformed beings that live in the Abnormal Library and are based on animals also appear. CERO age rating: 15 years old and older.