Do the Japanese admit that their Chinese characters come from Chinese studies?

Japanese and Koreans are completely different, so Japan has only ranked second in the world for decades. They keep the country name for their own culture. Traditional Chinese Medicine (TCM) is called "TCM" in Japan, and there are countless cases like Mapo Tofu and Lamian Noodles, which the Japanese call from China. Chinese characters are of course called Chinese characters in Japan. Everything we learned from other countries is gone.