"90% of Your Mood is Blood Sugar" Masami Koike Price: ¥1650 (10% tax included) I read this book twice after purchasing it, with a book cover on. The condition of the product is based on a layman's perspective. Since it was on display in a store, there may be initial blemishes, so please understand that it is a used item before purchasing. It looks clean to me. #MasamiKoike #Masami_Koike #Book #Society