Take the unified examination for international students after learning the language. The enrollment brochures of each university are different. The University of Tokyo is very difficult to take the exam, and then some universities don't recruit international students. National universities are not easy to get into, let alone the University of Tokyo, which is much more difficult than Peking University and Tsinghua. Most private students apply for private universities, and then it is best to prepare hundreds of thousands of tuition fees.