Why Japanese males are hairy while Koreans are not so?

Question:

I saw a lot of Japanese males having a lot of armpit hairs and etc. while most of the Koreans doesn't even have such hairy armpits and etc. Why are they different when they all look similar and they're both East Asians? haha

Answer:

Actually, the fact that "they look similar" has nothing to do with culture of shaving armpit. I think other people in Asia like China and many other countries would look similar to Japanese or Korean. And they have their own custom of whether shaving their armpit.

I don't know about Korea. But in Japan, it's just seen as meaningless for males to shave armpit.