Daigo Umehara's first book Willpower to Keep Winning was released yesterday in Japan -- and already is sold out in many places.
Many people reported that they could not find the book in book stores. They have no choice but to wait for Amazon's restock. Amazon Japan is the biggest and most popular online retailer in the country and the book is "Temporarily out of stock" since afternoon. Some people started selling used one at almost 2,000 yen without shipping cost, from normal price 777 yen free shipping.
Umehara's book was ranked at 35th on Amazon's Best Sellers Rank in Book category, and 2nd in Game Guidebook category.
On April 8, Nico Nico will have a dedicated live show to Umehara's book. The books he signs will be sold on Nico's online shop. Reports said that all of 50 copies was already sold out (preordered) in March 31.