"I crave for you, (Y/N)...." Levi Ackerman and (Y/N) (L/N) have been friends since they became soilders in the Military. (Y/N) never had a crush on Levi and considered him as a friend or an overprotective brother but Levi has some feelings for (Y/N). Something more than love, more like an obsession for (Y/N). A very dark one. Things get pretty crazy at HQ when the news go around that someone's killing some of the cadets. As the clues begin to add up, (Y/N) slowly becomes an enemy#2 since she's the main cause for this diaster.