>>6359535There are two main things you need: being native and having a bachelor degree.
If you're not native (like me) it will be much harder to find a place and get a visa, and you can only teach in language schools, not in elementary/junior high/high schools.
If you don't have a bachelor degree you may make one with photoshop and try your luck, a lot of people do it, but l have no direct experience with that.
If you're both native and have a degree, it's impossible you won't find a teaching job in japan, especially if you're not picky about the location.
But l can't be more specific because as l said, I'm not native so l had to take a different route.
Anyway, be prepared to the high chance of being treated like shit.
I have the luck to have an american boss, which means l don't have to live all those crappy rules that fill japanese society.