Is it normal that i really want to have a life in japan?

Well... you sound better than the average weaboo.

Just realize that Japan is a xenophobic society; even though they may have softened a bit, they're still pretty insular.

It's not easy to get started there - but you sound like you might have a chance.

Hey i used to live in Japan and went to a japanese school.
First of all you don't have to be fluent in japanese to get into a japanese university, many universities have special courses for foreign people to learn japanese.
Or you could also go to a language school, though those are pretty expensive!
There are many ways of getting into japan, you could just go there on a normal tourist visa, get to know people and try to find somewhere where you could get a job later on. Connections are everything!

That you like Hatsune Miku is of course great, i know some japanese girls who like hatsune miku too, but please bare in mind that it is not exactly "average" not even in Japan! Life in Japan is tough, especially in the bigger cities like Tokyo and Osaka. If you go there on an extended stay you will know what i mean. I absolutely love Japan, but there have been times where i thought everything was grey and stressful and that everybody were stupid and mean. Japan has it's flaws, like any other country, but the positive sides of Japan makes it all ok.

Japanese people can be really difficult to become friends with if you don't know Japanese. I'm not saying you have to be fluent in japanese, but if you show them you have an interest in learning their language, many will open up to you!
A lot of people seem to think that the japanese don't like foreigners, and of course there are some that don't, having been a closed country for so many years, but i have never faced any racism while i was in Japan.
I have faced some ignorance, but never real racism.

Good luck!
Japan is a great country

LOL WEABOO.

Kidding.
It actually does seem like a interesting place, I'd like to go there at least once sometime. Good luck with all that job stuff if you do go over there.

Same my siblings listen to rap while I listen to vocaloid and I get pick on all the time for having a bad taste in music

Ugh. Just stop with the weeaboo shit or burn.
There's so much more to japanese culture than anime and the music you're fed by the media.

You can go to a university in England and learn the Japanese langauge and/or Japanese Studies there. Some do foreign exchanges.

I'm from England too, and did an exchange on Kyuushuu island (Southern one, below the banana that is Honshu) for 6 months a year ago and I had a blast!

I went to a Japanese university and was in a halls of residence with people from Korea, China, Vietnam, the USA, Canada and Thailand. I made some truly good friends there and I believe I'll still be in touch with them in 5 years time, touchwood!

After a degree, you can apply for schemes such as JET, Interac and Aeon. You become an English teacher and you don't necessarily have to learn Japanese, although it will help if you do know some.

BE AWARE: There is so much more to Japan than Hatsune Miku, and some Japanese people might feel a little bit like you are marginialising your culture if you say you want to go to Japan because of anime/Hatsune Miku/one particualr thing which is dead popular outside Japan.
I'm sure that you're not trying to do so [and wouldn't want to], but I just thought I'd better tell you.
You WILL make a few mistakes minimum out there and you might not even realise you've made them until a long time after they've happened.

* * * * *
One thing I should add is that I knew I had to go to Japan since I was 11/12. It was thanks to a Vengaboys video, of all things!
Don't expect to get the exact course you're after straight away, but keep on fighting to achieve your dreams.

I hope I've not put you off, but I'm sorry if I have.

I wish you the very best. 頑張れ! (Ganbare = Do your best/persevere/good luck!).

As soon as you mention 'The anime' and 'hatsune miku' I really want to smack you. However, I do respect someone who wants to travel / wants to learn more / is curious about another culture. It shows that they are open minded and up for opportunities.

Fascinating country. A colleague (who is English) spent two years there despite not speaking Japanese. She was teaching English as a foreign language. Perhaps that's an option for you. And then you could learn Japanese while you're there. Always easier to learn a language when you're immersed in it.