If you think there is no problem with Japanese, you can go to a language school in Japan to study 1 year and 3 months, and then apply for admission to a junior in some universities. In this way, you don't have to learn from the freshman year, and you can save two years of tuition. However, some language schools cooperate with universities. For example, if you are admitted to a designated university in this language school, you will get an entrance scholarship, usually for one year, at a monthly rate of1.4000 yen. However, there are few such schools. That's what my friend did. It is generally more attractive to people with poor family conditions.
I hope it helps you.
Feel free to consult if you have any questions.