Boyfriend's hard work is paying off, for "I Yah" has ranked #1 on various music sites with its release!

According to their label Starship Entertainment, the title song for the repackage album reached #1 on music charts such as Cyworld and Bugs. Not only, so but as soon as they released their album, they became the #1 searched term on portals such as Daum and Naver.

"I Yah" is a song off of their repackaged album of the same name, and is once again produced by hit maker�Sweetune like their hit "Janus". Through the new powerful and upbeat�dance track, the group showcase their masculine charms and powerful singing and rapping skills. Child actress�Kim So Hyun also made a cameo as the girl that Boyfriend can't take their eyes off of in the "I Yah" MV, so check it out here if you haven't seen it!