Missing boys

There were news reports about seven boys who disappeared in 1996. These boys were obsessed with exploring the terrifying. One day, one of them, named Kim Taehyung, suggested going to a haunted house far from the city, but they never returned. Their parents were searching for them, worried because they hadn't seen them for so long. A year later, one night, a student from the school the seven boys had attended—the story of them was heard in every generation—until it reached Mil-mi's ears. Intrigued, she suggested to her friends that they investigate. That same night, they all went to the eerie forest and arrived at the abandoned cabin-like house. There were many tapes warning that it was forbidden to enter, but her friends didn't care and tore them down. Upon entering the large house, they saw that it was covered in cobwebs, dried blood, and many other ancient things. They explored for a long time, until one of "Mil-mi's" friends saw something that terrified him greatly.

Mil-mi: We hear voices on the device we brought, we'll ask for one of their names, A-are you Jimin... Park Jimin?
Jimin: Yes.