Kwon yuri is a young officer.Her life as a police is pretty normal until one day she was ordered to enroll into an all girl university to solve a murder case there. Will she ever solve this mystery with the help of her best friend,Jessica?And what will happen when a person as discipline as Yuri met the most famous troublemaker in school?Stay tune to find out. This fic is mostly about yoonyul and Jeti as side pairing.Eventhough it might seem like a yulsic story at first.  AN This is my first time writing a story so please forgive me for any grammer mistakes or messy plot.And feel free to comment on whatever you think about this story. Foreword"Im yoona you are late again, cant you have some sense of time"scolded an old aged teacher."I swear it isnt my fault Tiffany unnie didnt want to wake up"yoona told the teacher accusingly."Yoona i thought we were best friends~"huffed Tiffany feeling betrayed.