East and Southeast Asian men tend to have less hairy bodies than South Asian, Southwest Asian and European men. As for being more or less hairy than Latinos, that depends a great deal on which Latinos you're talking about, Indigenous peoples in the Americas generally have little body hair, and in that, resemble East Asian men. Latinos with considerable Spanish or Mediterranean (Italian, Greek, Arab) heritage are more likely to be hairier.
Circumcision is common in South Korea, and this is probably due to American influence in hospitals the past half century. In other cultures of the region (Chinese, Japanese, Russian) circumcision is not common.
I don't understand what you mean by "keep their pubic hair". Maybe you mean "don't shave their pubic hair"? But this isn't something unusual. Muslim men will generally shave pubic hair, but as far as I know this is not common among non-Muslims. So it isn't surprising that East Asian men do not shave their pubic hair: most men around the world do not shave their pubic hair.