Boy group BTOB's fan club has increased in numbers.

From Sunday to Tuesday in the span of two days, BTOB's official fan cafe had 3,600 new fan members join- putting BTOB's fan club on the top of Daum cafe's ranking. The number has been increasing since BTOB's announcement of their comeback on June 4, going up to about 72,000 members total.

A part of the reason the numbers increased so quickly could also be that member Yook Sungjae has been receiving much love and popularity through the KBS 2TV drama "Who Are You." BTOB has also been mentioned numerous times on the MBC show "Mask King Singer."

BTOB will be releasing their first official album at the end of this month.