Both books come with a flexi-disc, the above features themes from Captain Ultra(again), Friendly Monster Booska, the Japanese theme for the American Tarzan TV show featuring Ron Ely and most importantly, Golden Bat! The Gamera disc features a couple of kids acting out the story from the movie w/sound effects from same. At one point I could swear I hear Gamera losing a hubcap...
Children's book?...