For most fans, seeing their favourite idols go for military service is heartbreaking as they won't be seeing them for two years.
On the idols' side, it also means that their career progress and popularity will be put on the back burner.
However, several idols will be completing their service soon and ready to be welcomed back into the loving arms of their fans.
Are you ready? Check them out in the gallery below compiled by Koreaboo.