This is a picture of a ubiquitous kind of air conditioning holder that is used for apartments in Japan. It is not a balcony. You can see a round thing that looks like a vent in the shadow just below the roof. That is the hole in the wall through which you run the tubes connecting the internal and external portions of the air conditioner. Since these are so common in Japan, someone obviously wasn't looking or thinking very hard.
This is a picture of a ubiquitous kind of air conditioning holder that is used for apartments in Japan. It is not a balcony. You can see a round thing that looks like a vent in the shadow just below the roof. That is the hole in the wall through which you run the tubes connecting the internal and external portions of the air conditioner. Since these are so common in Japan, someone obviously wasn't looking or thinking very hard.