Is Nightmare High coming back?

Nightmare High ended on March 31, 2016, on Naver TV. The show concluded after its 12-episode run, and there are no upcoming episodes scheduled.

Nightmare High was a mystery drama series that premiered in 2016. It was set in a school where strange and unsettling events occurred, involving students, teachers, and their dreams. The story followed Kang Ye Rim, a top student and class president, as she tried to uncover the truth behind the bizarre phenomena affecting her classmates and herself, including trance-like states and dreams becoming reality.

The series featured Kim So Hyun as Kang Ye Rim, Lee Min Hyuk as Seo Sang Woo, and Uhm Ki Joon as Han Bong Goo. The show was approximately 15 minutes per episode and rated 6.9 on TVMaze.