There are lots of Japanese IT jobs floating on the web out there, but I haven't seen animation or photography postings (and I check online job listings about once a month and have been for about two years). A career in those fields will require connections...
Are there no jobs / companies in Greece (or other region) in your field that have some kind of connection or relationship to a Japanese firm? If there are, you could - for example - get a degree, go work in the field of your choice for a company with some Japanese connection, build up a resume, network for a few years, study Japanese in your free time and, with a little bit of luck, eventually move to Japan in under a decade (sounds like a long time, but remember, you are being productive for that decade (job skills, language, networking)).