Would it work out if i attempt to live in japan? What can i do to have a better chance?

Okay ive wanted to move to Japan since i was literally five. Someone sent me a book of Japan showing the culture and religion and legends. but there was no return address and it had my name. i heard you HAVE to have a work visa to stay there. im 12 and im already saving money for japan. i go to the best school in the area and i plan on going to Auburn (>:( ) to become a vet. one of the best colleges in the state. I work well with others even though im never satisfied with what i do. im also experienced in agriculture and animals. since i live on a farm. do i have ANY CHANCE AT ALL of living in japan. i dont want flashy things just simple house with MAYBE traditional paper walls . couple of books no fancy food ect. Would someone offer me a work visa ( i have to go to college for 8 years) ? and if not what do i do?!