SEE ALSO: Ex-Rhythmic Gymnast Son Yeon Jae opens a new chapter in life and shares updates

Kim So Eun and Kang Ha Neul returned to donning school uniforms for the teen horror movie during their first filming on February 27. Even when the cameras weren't rolling the onscreen couple warmed up to each other.

Kang Ha Neul shared, "Although it is nerve-racking to take on my first lead role and horror film, I will work hard and show a good image." Kim So Eun also said, "It was really exciting to arrive on set. Even though it was our first filming, the actors, director, and staff all had good teamwork."

'The Girl's Grave' is directed by Oh In Chun and portrays the story of In Soo (Kang Ha Neul) who has the sixth sense of seeing ghosts and meets a myserious female ghost (Kim So Eun) at his new school when his classmates start disappearing one by one.