It's interesting, if you think about it, that Japan's beverage industry decided to market canned coffee as a manly drink.
For instance there's Suntory's Boss, whose label features an iconic man who looks suspiciously like Ernest Hemingway.
I don't see why it wouldn't be possible to market green tea as a manly drink. After all, we green tea drinkers include some pretty tough monks, for instance.
Just a few of the wide variety of canned coffee drinks sold out of Japan's ubiquitous vending machines.