In which Amber Liu plays as leader of the trumpet section for the performing arts high school band and has to negotiate with the orchestra's prodigy first chair violinist in showcase matters.      

Amber's best friend and childhood friend are hitting it off well, in her opinion. In fact, they're almost hitting it off too well.      

Sunwoo mutters a small remark about how Junghwan should've gone into acting rather than be a vocal major and Junghwan promptly flicks him hard on the forehead. Chanshik stays in a catatonic state on his desk while Jinyoung and Shinwoo each hold the arguing duo back from tearing into each other.