The first girl has been cast in Shut Up: Flower Boy Band, and she’ll be playing the heroine and main romantic interest, Su-ah. Given that she attracts the affections of not only our hero (Sung Joon), but also his best friend (Lee Min-ki) and band rival (casting not announced), there’s a lot of curiosity about Jo Boa, the newcomer who’s basically hit the jackpot on her first try. Read more on Dramabeans.