Japanese university; online school student

I'm 16, in 10th grade and I want to go to Japan for university. I don't know a ton of Japanese right now but I believe I can learn enough by the time I need to apply for university if I'm dedicated. Although, if I ended up not being able to, I would go to an English-speaking one in Japan.
The thing is though, instead of attending public high school I do an online (virtual) school from home. However, the curriculum is similar to a public high school, if not the same. Would I still be able to get into a Japanese university? If not, could I do 11th and 12th grade at my local public high school to get in, or is it too late now??
All answers are greatly appreciated. Thank you.

At first you complete 12 years of education in your own country. Then you apply Japanese university. Thousands of foreigners chose language schools for study. But I strongly suggest you to apply Japanese university for your higher education.