Japanese is the official language of Japan, despite the absence of any other official languages.
There are many English-language courses available as a result of the goal of expanding the number of international students. If you decide to study in a language other than your own, you might need to show proof of your skill. It is typical for you to be able to enroll in a language course to assist you get better if you don't match the prerequisite standards.

You should make an attempt to learn as much Japanese as you can, even if you study in English. The best approach to practice is to converse with locals and other students. A skill that looks fantastic on your CV/resume is the ability to speak another language!