Annual events in Japan (autumn)
As an autumn event, the event that attracts tourists the most will be "autumn leaves." The colors of the leaves change in the autumn season when it gets cold in many parts of the world, but there are places where you can enjoy red and yellow burning autumn leaves in many parts of Japan where there are many mountains and the temperature difference between morning and evening is intense.
Since Japan is an elongated country from north to south, the best time to see it varies depending on the location, and the best time is from about October in early places such as mountainous areas with low temperatures, until about late November in the relatively high temperature urban areas in many cases. In the center of the city, ginkgo trees in front of Meiji Jingumi are famous, and you can enjoy a single road covered with yellow color. In Northern Kanto, a little bit far, Irohazaka of Nikko in Tochigi Prefecture is a landmark of autumn leaves. Because the route to climb the mountain is along a winding road, you can enjoy the color changes as you drive up the mountain. You can also enjoy autumn leaves at historic sites such as Kiyomizu Temple, Tenryuji, Kitano Tenman-gu, of Kyoto. Many places are alsl lit up at night.
Also, autumn is the harvest season in Japan, which is also an agricultural country, so you can taste many delicious crops at this time of year. Many seafoods such as Sanma called "autumn sword fish" also come to season; there are also expressions such as "Autumn of appetite" because very cheap and delicious food is available. Even for Japanese people, autumn is time to think about a menu that is conscious of seasonal ingredients as a time to eat delicious items.
Halloween at the end of October has become famous recently, but it seems that this is evolving as a day to enjoy a costume party on its own in Japan. In the city such as in Shibuya, young people engage in the event overnight. I think it is fun to join together, but if you use public transport on this day without knowing, you may be surprised by too many crowds and virtual groups.