Vote for your favorite hashtag to trend on Hyunsik's birthday
#HappyHSday
#PrinceHyunsikDay
#HappyHyunDay
#BTOBHyunsikDay
#HappySunbaeDay
#HappyStarSikDay
#Happyhyunsikday
#Hyunsikieday
#0307ThankYouSikStar
#hyunsikillersmileday
#StarSikDay
#HappyBTOBFatherDay
#HappyMickeyMouSikDay
#BabyHyunsikDay
#HyunsikPDay
#BTOB6SenseDay
#ItsHyunsikday