Melting the detective's cold heart

Sihara is a detective that has worked in the CAD for 3 years. She is one of the best detectives in the in the Country. However, the criminality is currently increasing which causes an increase in the employment of new detectives. Due to those circumstances Oliver (a new detective that just graduated from the academy) is now a newbie in the company, and Sihara’s partner. Sihara isn’t very happy with the new changes as she is used to working alone her own cases. Oliver tries his best to win his place as Sahara’s partner, but her cold heart hides plenty of scars from a previous partner.