It’s too me for me to go Japan at 23?

I’m currently 20 gonna be 21 at may but I hear that it need 2 years to learn Japanese to be n3 or n4 to go Japan… and I’m getting bachelor of computer science(hons) at 23 so it’s too late? For work and stay there overever. But I sure do want Japanese school lifestyle

by Hot_Breadfruit1635