Japan is lovely place to visit. It is an independent Island country in east asia
Tell me more about that Volcanic archipelago! 
The island of Japan was formed rom volcanic activity consisting of about 6852 islands 
What is the current population of it's capital city?
Japan is well populated
Fantastic, how  modern is Japan compared with Hong Kong?
is a stratovolcanic archipelago consisting of about 6,852 islands. The four largest are Honshu, Hokkaido, Kyushu, and Shikoku, which make up about ninety-seven percent of Japan's land area and often are referred to as home islands. The country is divided into 47 prefectures in eight regions, with Hokkaido being the northernmost prefecture and Okinawa being the southernmost one. Japan is the 2nd most populous island country. The population of 126 million (2019) is the world's eleventh largest, of which 98.5% are ethnic Japanese
Mesozoic orogeny and their directions are basically northwest.
Unlike most ancient mountains on the mainland, many important islands in Korea were formed by volcanic activity in the Cenozoic orogeny. Jeju Island, situated off the southern coast, is a large volcanic island whose main mountain Mount Halla or Hallasan (1950 m) is the highest in South Korea. Ulleung Island is a volcanic island in the Sea of Japan, the composition of which is more felsic than Jeju-do. The volcanic islands tend to be younger, the more