I just finished watching Let's Fight, Ghost, which features 2PM's Ok Taec Yeon as a college student who can see ghosts and Kim So Hyun (who I liked a lot in Who Are You?: School 2015) as the ghost of a high school student (but think 17 or 18, not 15). South Korea does good ghosts. :) It's a cute show, with a fair amount of humor, creepy ghost makeup and visuals, and a satisfyingly creepy bad guy. It's a show from tvN, which is a cable station in Korea, as opposed to a regular broadcast station. A lot of the recent dramas that I've very much enjoyed have been from tvN. The pacing in Let's Fight, Ghost is fairly uneven, though, so I give it 4 out of 5 stars on DramaFever (where I watched it) and 8 out of 10 on MyDramaList (where I track what I've watched.)