TvN drama series “Black Dog” starring Seo Hyun-Jin & Ra Mi-Ran. The teaser poster has Ra Mi-Ran and Seo Hyun-Jin walking in different directions at a high school. Caption on the teaser poster states in Korean “I thought I would know if I became a teacher.” Meanwhile, below are still images of Ra Mi-Ran and Seo Hyun-Jin in the drama series. 



“Black Dog” first airs December 16, 2019 in South Korea.