Surviving the Haunted House

Ki-Su, who was forced to participate in a club MT, gets trapped in a haunted pension with his junior, Ju-Won, whom he dislikes. Ki-Su, who hates scary things, panics, and Ju-won says there's a way to chase away the ghosts... Wait, why are you taking off your pants...? *"There's something ghosts hate, right? Dirty things."* Will he be able to survive in this place, both physically and mentally...? (Source: Mr.Blue, translated)