Four-book set by Koichiro Fujita. Individual sales are not being considered. There are minor corner folds, etc., but the books are in clean condition with no noticeable stains. * "Healthy Intestines!": Health Method: Improve your intestinal environment for a healthy body and mind! Koichiro Fujita Price: ¥590 * Habits that Damage the Intestines, Habits that Strengthen the Intestines: 30 Ways to Cultivate Intestinal Bacteria and Boost Immunity Koichiro Fujita Price: ¥800 * 90% of a Person's Life is the Intestines: 30 Ways to Protect Your Important Intestines from Disease Koichiro Fujita Price: ¥800 * "Leaky Gut" Will Destroy You! Koichiro Fujita Price: ¥1200 #KoichiroFujita #Koichiro_Fujita #Books #JapaneseLiterature/Essays