Just gonna C&P from the elswordhq forum topic I made asking the same question:
"Ok I know that the bosses they drop from is mostly the same for teh KR version, HOWEVER, Elsword HK doesnt have all the maps KR has and the only info I can find about the sets is for teh KR version so I was wonderin if anyone could gimmie a hand and tell me any info they know about the sets in the HK version at all, much appriciated
(the only info I can find about the sets is G.Audia • View topic - Elsword Guide [In-Depth] Ver 5.0 Skill List update
but like I said, its only for teh Korean version of the game)"
and why repost this topic in this forum, since the more places you ask the better your results are more likely to be amirite :P