Depachika means the basement of a department store. Here you will find many old retired people sampling a large variety of free foods. There are many department stores in Japan so you can eat for free every day. Just don't go back to the same one everyday. It is considered rude. Sogo, Marui, Daimaru, Hankyu, Tokyu Honten and Takashimaya are some of the best to visit for free food samples.
The NTT phone company has vending machines selling prepaid SIM cards in Japan. When you first arrive at Narita Airport there is a SIM vending machine in the lobby of Terminal 1 and 2.
The male sperm sac from cod fish is a popular meal in sushi restaurants in Japan It tastes creamy and has a custard like texture.
Asakusa Shrine, known in Japanese as Sanja-sama, was built in the Edo Period and somehow survived the bombings of World War Two. It is just a few minutes walk from the train station of Asakusa on the subway line. This shrine has free entry and also has a unique open roof market that closes the top in bad weather.
Black Jack (in Katakana ブラック・ジャック) is a Japanese comic book series composed and drawn by Osamu Tezuka in the 1970s. It is about the medical adventure of a doctor called Black Jack. The Black Jack comic books have hundreds of books each containing a story of about 20 pages.
See my article on the Tetsujin 28 giant robot statue in Japan.
Japan currently has about 5 and a half million vending machines. When visiting Japan you will see them everywhere. Most vending machines in Japan sell cigarettes or drinks (including cold or hot tea, soft drinks, soup and even alcohol). Japan’s first vending machine sold cigarettes back in 1888.