Please carefully review the details (photos, product description, price, shipping method, etc.) and proceed with your purchase if everything is correct. This is a set of 3 practice problem books for the Japanese Soroban Federation and the Japan Chamber of Commerce and Industry's certification exams, along with a set of 3 "Mitori-zan Hospital" books. The shipping cost has been reduced. #soronyan soroban materials ← You can see all the soroban materials here. Shipping will be via anonymous "Nekopos" delivery. Please read the profile carefully❗️carefully❗️carefully❗️ and purchase without commenting if you have no questions or requests for combined shipping. Soroban Textbook Weakness Overcoming Training Mitori-zan (Mental Calculation) Mitori-zan (Mental Calculation) Elderly Brain Training Right Brain Right Brain Activation Anti-aging Dementia Prevention