Work and Travel Japan Osaka

I'm a biology student and help sometimes in the falconry to show the people how beautiful and strong the birds of prey are.
I work only part time, because i don't have time for a full time job, because of my university lessons.

Now i want to learn more languages!

I speak german, english and portugese but now i want to learn japanese.

So i plan for 1 year a work and travel in Osaka, but the flight cost 800€.... and the japanese lessons are really expensive too...

I can live with friends there so i don't pay a lot for my room, but i need to look for a job there and food cost, living and the japanese lessons are too much...

So i ask you for help :)

I can speak japanese but it is only enough to have small conversations and in japan i can fullfil one of my big dreams and learn one asian language properly.