A coloring book by illustrator Natsuki that is told like a picture book. One day Sora the cat hears that a "bell of happiness" exists somewhere. Sora looks for the bell in a mushroom forest, a meadow full of flowers and a stylish town.
Cats and other animals appear among the flowers, drawn in a gentle, slightly nostalgic style. An index is included at the back of the book.
The binding lets the book open flat. The paper is HS Gao, a paper often used for sketchbooks and picture books, with a soft feel and a smooth surface. Colored pencils, watercolor pencils and markers can all be used.
Translated from the Japanese original.