Where can a smoker go, in Tokyo?

Question:

I've heard that smoking isn't allowed in the streets of Tokyo, anymore. Is that only in certain parts of town? Also, what about smoking at Narita airport?

Answer:

Smoking is allowed in many places. Only certain designated areas around the main train station is where you can't smoke, instead there are "smoking areas" in the main train station areas, clearly marked. Other areas you are free to smoke outside all the live long day if you want.

Just be civil about it.

At Narita Airport there are "smoking rooms" where you are allowed to smoke in.