Oh! My Ghost

Oh! My Ghost is a 2022 South Korean comedy horror film, directed by Hong Tae-sun and starring Jeong Jin-woon, Ahn Seo-hyun, Lee Joo-yeon and Jeon Soo-jin. The film written by Yoo Se-moon tells the story of 'Taemin', a ten-year-old trainee who sees ghosts. He gets a job at a shooting studio where every night a mysterious incident occurs. It was anticipated to be released in theatres in the second half of 2021, but was postponed and finally released on September 15, 2022.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.