All of Us Are Dead
지금 우리 학교는 (original)
A high school becomes ground zero for a zombie virus outbreak. Trapped students must fight their way out — or turn into one of the rabid infected.
Starring Park Ji-hu, Yoon Chan-young, Cho Yi-hyun, Lomon, Yoo In-soo, Lee You-mi, Kim Byung-chul, Lee Kyoo-hyung, Jeon Bae-soo, Jung Yi-seo
Watch "All of Us Are Dead" on Netflix released in 2022. It's a horror and action & adventure show, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of show.