The Adventures of Supergaijinman
Click comic to ENLARGE.
The Tokyo Metro has been running a 'manners campaign' for several years, and each month publishes a new poster in stations. Over the months, the campaign has pretty much covered every bit of proscribed activity (don't throw up on your fellow passengers, don't practice your golf swing on the platform with a wet umbrella, etc.) imaginable, and several months ago moved on to behavior that is apparently encouraged.
The above images are 'repurposed' from a campaign poster that urges passengers be considerate of their fellow travelers and keep the door area clear so passengers can get on and off. It's not clear from the original artwork if the big fellow is Japanese or gaijin, but I assume his manly cleft chin and strapping, non-herbivorous physique indicates he's not Japanese.
[To see other cartoons and comics in the Tokyo Metro series, click on "Tokyo Metro" in the labels below.]