I just wanted to do something new. Nothing in Korea drove me away and I would happily go back if Japan fell through. I am very much enjoy jet so i do not regret leaving at all. Korea should be pretty easy to find a job. Go through a public school recruiter and you should be fine. Private academies pay better, but if they are not a large company (owned by the company not a franchise.) they can be really hit or miss. I would say apply for public school or avalon (again not a franchise but a branch). Age should not be a problem