Moving to Japan alone at age of 18

Hello, I would like to move to Japan at the age of 18.

I'm currently 17 yo living in a small country of Slovakia. I have been studying Japanese for 2 years and have been communicating with Japanese people for 1.
I even found a girlfriend in there, we've been together for nearly a year(I really like her). My country is boring, I'm not intending to work or study collage in it.

I already talked with my parents about it, and they will support me as much as they can. I plan to visit Japan for one month this summer (if it will be possible). I would like to ask if it's possible to transfer to high school(to complete last year of it) and live alone. I would consider my Japanese decent, and until I'm 18 it will definitely improve more, currently N3〜.

During my time in potential high school I would like to work as part time or maybe at some band(I can play electric guitar).

Thank you for your replies and time in advance!

No student visa for highschool.

Wait until you finish high school and get a student visa for a language school.

Do a google search on minimum age for entering a valid contract. At 18 you will have trouble renting somewhere to live.

Something you will learn as you get older is that other countries do not let you live in a particular country because you find your location boring.

Japan tends to have more strict immigration laws than some countries. In general - if you want to live in Japan you need to have a reason valid for the Japanese government to allow you to live there.

This can include:

(a) Employment
(b) Study
(c) Family
(d) Refugee/Asylum Seeker
(e) Cultural exchange / arts etc

If you want to live in Japan because you find Slovakia boring - this will not get you a visa. Your actually lucky as you have an EU passport - which means you can live and work in any EU country.

I'm sorry to say this - but you may need to look for another reason to live in Japan apart from "because I want too" as there is no reason for Japan or any other country to give you a residency visa.

If I come across as a bit mean - it's because I'm a teacher.