This is the photo, and BBS topic about it.
But, I don't understand a reason why this photo is unique.
According to English postings on above-mentioned BBS, they seems to talk about the photo as following.
"Are Japanese people playing in game arcade with formal suit?"
I am Japanese, and I don't think it is not strange very mush.
It is very usual sight that businessman wearing a formal suit in game arcade, especially friday evening.
This topic became popular in Japan because Japanese people surprised at a fact this is surprising enough to people in other country.
How about in your country?