A pair of inventive Japanese illustrators have designed a new book that incorporates light and shadows to make the story and characters come to life. Megumi Kajiwara and Tatuhiko Nijima created a book called Motion Silhouette, and each page has pop-up figures that move and morph based on the light in the room.

The pop-up figures include trees, a train, people and a butterfly, and they magically expand on the page depending on how much light is shone on them.

Each page is never the same twice, and the shadowy illumination of each figure gives the book an in-the-moment, alive quality. Watching the brief video below makes you think that Motion Silhouette is just about one of the best bedtime storybooks ever.

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