Greetings and welcome. A lot of Japanese I know are pretty health-conscious and enjoy imported organic foodstuffs (the healthier the better). They don't seem to mind paying a premium price for it either. I know a guy here who has his own business selling 100% organically-grown coffee to a select number of clients and he does pretty well for himself (and he charges more per cup than Starbucks does, lol). Good luck with your business endeavours.