On my planet, the United States, we have all kinds of people, even centaurs and mermaids. But there are a few types of people I have seen in Japan that we don't have in the U.S.
These are the guys who refuse to wear anything but sweat suits, preferably in bright yellow or orange, with varying degrees of bad English in bold lettering on them such as "Bad Boy Bad" and "I like nice good, do you?" There's a sweat suit boy in every crowd, even cocktail parties and funerals.
Why is this OK? You don't see people hanging out in their ballet costumes or equestrian gear. So why have sweat suits come into fashion? I have never seen a fashion show featuring sweat suits. As a matter of fact, I'm pretty sure this is the very reason fashion exists: to discourage people from wearing sweat suits in public.