Is being an english teacher really the only way to live in japan as a foreigner?

Question:

i want to live in japan, but by looking at most of the answers here at yahoo answers,i always find people saying that if you want to live in japan you need to get a job offer first, and its usually as an english teacher. im asking this because i dont want to be a teacher,im going more towards the hotelery and tourism/entrepreneur career.could i get a job as a tourist guide,working in a travel agency?. what if i invest on a business?. also i have a friend in japan,can he find me a job offer on what i want to do?
btw im fluent in spanish and english,spanish being my first language,and english because i've been living in the UK for about 6 years.
thanks

Answer:

The followings are occupations of the foreigners I've actually met in Japan (at work, privately).
※I don't know what kind visa brought them to Japan, though.

a. English-speaking foreigners with little Japanese knowledge;
diplomats or working at embassies, English teachers (at private schools, at my high-school/college), bankers(dispatched), lawyers (dispatched), journalist (dispatched), entertainers (e.g. dancers), models, spouses of Japanese citizen

b. Foreigners (incl. non native English speakers) with good/fluent Japanese;
translators/interpreters, English teachers (at a private Japanese high-schools), tourist guides, engineers, journalists (freelance/ dispatched), Spanish teacher (at my college), running a business, talents, models, spouses of Japanese

c. Foreigners with poor Japanese/English knowledge;
students, cleaning staff, factory workers (usually Brazilians dispatched by agencies)


※As you see, if you want to get categorized in a & b, you need enough WORK EXPERIENCE before you come to Japan.
I have a friend (non-Japanese) who had obtained a BA degree in Tourism. What he was doing in Japan is teaching English.