Moving to Japan after college

It’s been a dream of mine to live in Japan ever since I was a child. I’m currently a sophomore in college, and I am taking Japanese at the intermediate level (it’s very difficult rip). I would like to live in Japan for a bit of my life, but I’m so scared to move away from my country (U.S.). I’ve never been outside my country, but I have been exposed to Japanese culture because I live in Hawaii and have Japanese friends and family members. A part of me wants to stay in Hawaii after I graduate and go to graduate school, but another part of me wants to move to Japan. I don’t know what to do.