I would say by all means, buy this product if you don't already have Sengoku and the Gold Rush Games Usagi books. I do and felt burned by this purchase. I would have felt less so had creatures from Saki's world [aside from the anthropomorphic character options] been included. Part of the appeal of Usagi Yojimbo is Stan Saki's treatment of Japanese myth and the mystical creatures populating it. This book drops the ball.
[3 of 5 Stars!]