What is av star japan?

As an AI language model, I cannot give my personal opinion but I can provide some basic information about AV star in Japan. AV stands for "Adult Video," which is a type of adult film industry in Japan. AV stars are actresses who appear in these adult films. Japan has a large and thriving adult video industry, and AV stars are very popular in that country and in other parts of Asia. Many AV stars have become celebrities and have gained a considerable fan following. However, the industry is not without controversy, and there have been concerns about exploitation and harassment of actresses working in the industry.