Well drawn

Japan is banning smoking from the outside in. "Walking-smoking" is prohibited in crowded areas by signs like this, though I don't think there's any kind of enforcement. People still, of course, do walk and smoke. But they also jockey for position around the municipal ashtrays set up in designated outdoor smoking area. The effect is sort of the inverse of bums standing around a burning trashcan.

We went to a really nice cafe in Daikanyama with an airy patio and a comfortably crowded dining room. Smoking was permitted only inside. As a rule of thumb, the smaller and less ventilated a place is, the more likely it is to be crammed with chain smokers.