Drugs in Japan
A gram of cannabis weed costs about 58.3 USD compared to the UK's 5 USD.
And who controls weed in Japan? Foreigners. You can find many of them standing in dark corners around Shibuya's Center Gai flogging weed. For a while, it was common knowledge that the police didn't do anything about it but looks like they've pulled their act together a bit and are cracking down - a group of 77 drug pushers in Shibuya were recently arrested.
There were many folks who smoked weed when I was back in university which meant that I had to passive smoke it just by walking through the corridors.
Is drug intake popular in your region? I think there is a death penalty for people caught carrying drugs in Malaysia - I saw the word "Dadah" (drugs) coupled with a hangman rope on posters everywhere whenever I visited.
Below: A train driver for Seibu gets caught with drugs. He said he took it to recharge himself.Via Gigazine.