Magic Circle 27 (Korea) has been updated from March 29 to April 11, 2012. Nothing really new, just 2 costumes from other servers. Other notable rewards include Mary Character Card and Black Dragon Pet. See 3월 매직 코스튬 for full body screenshots of the costumes below.
Note (*): The original costume is designed for Mifuyu (Japan), but Asoka (International) uses the costume group for Mifuyu. So for non-Japan servers, Asoka should be the one using this costume. I can't be bothered to patch the game client to check... I don't remember Mifuyu being released for Korea.