Crossing the Animals: New Horizons is a smash hit in Japan. Some players are not content to play only a game to earn their own. They really want advice. Many of them. A a book that is important to them.
There are three main ones New Horizons Guide books for sale in Japan: one from the game's publication The Duchess, another The Duchess one with Amiibo tips, and finally, one from the game magazine Nintendo's dream.
This is a great guide, with over 1,000 pages:
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They look like dictionaries! This is unheard of for a Japanese guidebook game guide, in particular Animal Crossing.
Although it may not be hard to find, copies have been selling in store and online:
Today, the Kinokuniya in Shinjuku reopened after being temporarily closed. In accordance with Sports Hochi, about 100 people gathered at the store to buy Crossing the Animals: New Horizons guidebook.
Guidelines are available restart online in Japan, which may (perhaps?) explain the long line as an emergency has been announced in Japan: