When plague strikes a border town in the mountains of the Geishu Province, Lord Noriyuki sends his loyal bodyguard Tomoe to investigate. Once there, she and her retinue discover a truth far more terrible. Meanwhile, back at the castle, the sycophantic Lord Horikawa sets in motion a plot to eliminate Tomoe his own way. Only the rabbit ronin Usagi could extricate a friend from a predicament this perilous-if he hadn't ended up landing in the same one himself!
Book 21: The Mother of Mountains reprints Vol. 3 issues 83-89, which comprise the story arc The Treasure of the Mother of Mountains.
The introduction for this volume was written by film director John Landis (An American Werewolf in London, The Blues Brothers).
- ISBN-10: 1-59307-786-6 (s/n)
- ISBN-10: 1-59307-783-1 (tpb)
- ISBN-10: 1-43520-874-9 (Paw Prints)
- ISBN-10: 1-42874-918-4 (BWI bound HC)