B2ST's 3rd mini-album 'Mastermind' just recently hit the no. 1 rank for album pre-order sales. It was reported that 'Mastermind' instantly reached the top spot on the online album sales site yes24 the moment the mini-album was available for pre-orders. A representative stated, "If this becomes a trend, it could be the first time we run out of albums for our pre-orders." B2ST, who just recently revealed their new military concept for their comeback, is scheduled to reveal their album at midnight of the 28th via album sales sites, and will be officially ready for sale on the 30th. Source: Newsen Photo: Cube