Minato Research & Publishing Company, 1976. — 146 p. — ISBN: 0-87040-372-9.
This last volume in Saito Morihiro Shihan's 5-book series contains much more text and explanations than the other four. Besides giving some general information on Aikido and life with the founder in Iwama, the author focuses on training methods before going into variations and applications of techniques. He ends up with a section on group attacks, reminding us that Aikido always counts on more than one attacker.