Polar Bear Café: Collector's Edition Vol. 4By: Aloha Higa Series: Polar Bear Caf: Collector's Edition LIFE, WORK, AND COFFEE FOR FRIENDS AND COLLEAGUES OF MANY SPECIES. Polar Bear san runs a relaxing caf that serves delicious coffee roasted by Tree Kangaroo san. Tree Kangaroo san's apprentice, Masaki, is training to become a master roaster, alongside his experienced staff of red squirrels. Meanwhile, is zookeeper Handa san and waitress Sasako san's relationship headed in an unexpected