Hi! I'm a senior in high school and our profiles actually have a lot of parallels so you're in luck. We both performed well in high school– for the Japanese colleges, these stats will arguably put you at a much higher advantage compared to American colleges. You have to go to a school outside of Japan for 12 years to apply, but if that's not the case for you, be aware that there are exception to this condition. I would just directly contact their admissions to clarify that part. I chose to apply to both American and Japanese colleges, just in case, but I am planning on going to International Christian University in Mitaka (which is actually right next to Tokyo). I applied for an English-language based degree, which I highly suggest based on your language background and your profile. This factor actually changes a lot of things because going for a Japanese-based degree while living outside of country is insanely difficult. For an English-language based degree, it's significantly easier. As a side note: based on your academic profile as well, I would only apply to the best name universities because you have an amazing profile in admissions and it puts you at a higher advantage for grad school and getting hired.
If you aim to learn in college with parallels to American colleges, I would choose ICU mainly because its curriculum is more rigorous compared to Waseda, Keio, etc. Just like you, I prioritized going to a liberal arts college and ICU essentially is an American liberal arts college fitted to be in Japan. Public schools don't have a lot of programs, like how UTokyo only has Japan studies and EnviSci. I don't know much about the public schools, but Waseda, Keio, Sophia, etc.'s English-based curriculums are subpar and receive a lot of criticism for being not rigorous enough. Also, financial aid-wise, none of them offer scholarships besides ICU.
Also, I plan on going to graduate school in either Europe and the US, so my goal is to actually learn from a degree rather than just getting one to check off a box. If you don't plan on going to grad school/extend your studies and plan on diving into a career after getting a BA, Waseda, Keio, Sophia, UTokyo, and
Kyoto U have good brand names for finding jobs at big-name companies. I know that Sophia has a close connection with United Nations, and Waseda has a dual degree program with Sciences Po in Paris. There's probably more opportunities that I don't know of as right now. But ICU also has an amazing brand name for global companies for its status as a bilingual college. So, it's more of a matter with how rigorous of a curriculum you want to go into, what school environment you'd want to be in, and what you plan on doing after undergrad. The name brand for a lot of these schools are stellar.
Personally, I think it's an amazing idea to go this route. I don't have enough money in my college fund, don't qualify for FAFSA, and aim to go to grad school, so my dream colleges (Vassar, Columbia University, etc.) were off of the table. You get a top notch degree from Japan for a LOT cheaper compared to an American one, and can push you for great grad schools and great careers. A common path that I see is that people get these degrees, then work at great global companies (United Nations, Goldman Sachs, etc.). I am Japanese but raised in America and I know that I probably won't come in contact w/ another opportunity to live in Japan for four years without the risks of changing careers/doing it not young enough. I hope that this helps! I know how tough it can be, so don't be afraid to ask more questions or reach out.