Business Proposal, stars Kim Sejeong and Seol In Ah, in a workplace romance. For fans longing for more, the cast stars in other binge-worthy series: Ahn Hyo Seop in "Dr. Romantic," Kim Sejeong in "The Uncanny Counter," and Kim Min Kyu in "Backstreet Rookie." Seol In Ah stars in "Twinkling Watermelon," and Lee Deok Hwa in "The Red Sleeve."