A series of picture books with various creatures as their theme. - Series Name: Who's Stronger!? (Kadokawa Shoten) 5 books - Title: Fun Creature Picture Book - Title: Dangerous Creatures Picture Book - Title: Powerful! Mineral Character Picture Book - Title: Encyclopedia of Regrettable Creatures Thank you for looking. As shown in the photos. The covers are taped to prevent them from coming off. The inside is in relatively good condition and can still be read, so if you understand, thank you.