It wasn't Hype Boy, but "Ma Boy" back then! The summer QUEEN HYOLYN's visit on #TheKStarNextDoor

Overview

SISTAR medley by HYOLYN the summer queen! The first ever! 4th generation girl group medley by the 2nd generation 'Idol Star Athletics Championships' wasn't about sports, but love...? Revealing "Wait" by HYOLYN for the first time!