This is the second kashihon manga (rental manga) published by the mangaka under the name "Akira Matsumoto" in 1958, and his second debut work. It contains three short stories that were published in the magazine "Shojo". A fantastic fantasy masterpiece full of suspense and fantasy that transcended the boundaries of shojo manga of the time. The e-book version does not include the "Blue Petal" reading book (special supplement).