Jo Seung Woo

I'm only watching one Korean drama right now: Sisyphus: The Myth. It's a time-travel drama, with the usual plot incoherencies of the genre, but lots of great action set-pieces in which Park Shin-Hye kicks butt while the delightful Jo Seung Woo mcguyvers things. He's had success in film and tv, but is insanely popular in Korea as a musical theater star, in shows like Jekyll and Hyde, Hedwig and the Angry Itch.  This song from the movie The Throne (Sado) "Flower Bloom and Fall" is more to my taste than some of the songs floating around YouTube: