A Wall Street Journal 20 Best Children's Books of the Past 20 Years Selection! Chirri and Chirra frolic in the moonlight in the latest whimsical adventure of this much-beloved picture-book series from Japan. With the light of their trusty bicycles and a glorious full moon illuminating the darkness, Chirri and Chirra go on a nighttime adventure, accompanied by their new cat friends. From fizzy full-moon drinks that give them cat ears and tails to sparkling flower necklaces that grant them access to a special night market, the inseparable duo enjoys all the dreamy treats that the Full Moon Festival has to offer, basking in the warmth and light of discovery, generosity, and friendship.