Black Dog
블랙독 (original)
In a temporary position at a private high school, a compassionate teacher fights to support her students' dreams while navigating school politics.
Starring Seo Hyun-jin, Ra Mi-ran, Ha Jun, Lee Chang-hoon, Lee Yun-hui, Kim Hong-pa, Ye Soo-jung, Jo Yeon-hee, Jung Hae-kyun, Park Ji-hwan
Watch "Black Dog" from streaming services Netflix, Rakuten Viki released in 2019. It's a drama and comedy show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.