JTBC‘s new romantic-comedy K-Drama My Sweet Mobster (also known as Woman Who Plays With), based on web novel Playful Woman, recently premiered. It stars Um Tae Goo (also romanized as Uhm Tae Goo) as Seo Ji Hwan, a mobster-turned-CEO who hires ex-convicts to work at his company. He’s the stoic, no-nonsense type until he meets…