When I ask students who want to come to Japan about the charm of Japan, I often hear about “the beauty of Japan’s four seasons.” The seasonal changes of the four seasons are unique to Japan, which is an island country and has a temperate climate, but the change of seasons is also a time when you can easily get sick. Especially for those who are entering winter in Japan for the first time, please be warm at night and be careful about your health. Of course, “hand washing” and “gargle” are the basics, including measures against corona.