[Author's Note at the end!]   Before   The precinct was filled with the sound of shuffling papers, rolling chairs, and trainers making squeaky scuffing noises as they slid across the polished floor.    Sehun was leaning back in his own seat, eyes closed, as he evened out his breathing. The absence of voices wasn't lost on him.   "We've had reports of another missing student at Minyoung University in South of Seoul. Homicide hadn't been involved because none of the students had been found... Dead or alive."   Sehun scanned the file in front of him, glancing up to see the narrowed eyes of his superior, Chief Kim Junmyeon, as he reported to the homicide unit in their briefing.    Surrounding the table in the dimly lit room were several other homicide detectives and officers that worked in 406.    Park Chanyeol sat inattentively, his fingers brushing across the trackpad on his ever present laptop. Chanyeol was their information specialist. He liked learning. Therefore anything anyone in the precinct needed to know, they would ask Chanyeol.    Sehun returned his gaze to Chief Kim, who'd sighed deeply as he continued.    "Yesterday at 04:56, a student was found hanging in his room. Suicide was ruled out immediately at the scene by Lead Detectives Wang and Song." He motioned over to the two women, sitting with their arms crossed towards the back of the room.    "CSU," Detective Song spoke evenly, "was able to confirm that the body was hung post-mortem. They died before they were staged to look like they'd committed suicide."    Junmyeon nodded before he spoke again. "Organised Crime knows it's not Gang activity. They haven't ruled out fraternity hazing. The problem is it's been nearly impossible for detectives to collect much information, particularly as the students aren't very forthcoming." Junmyeon's mouth became a thin line.    "They suggested an undercover operation. Two months tops." Sehun's attention was fully trained on the chief then. "We have the youngest detective in this area. They thought it would be best if our own Oh Sehun would... Volunteer."   His spine straightened. He'd wanted to be more involved, as a junior detective, but this entire scenario had escalated faster than he was able to keep up.    "They want me undercover at Minyoung U?" He clarified, swallowing slowly. Suddenly he was aware that everyone in the room had given him their full attention as well. Junmyeon nodded. "They'd brief you more, but you'd essentiall