Kim Yong-sun was a detective investigating an unidentified murderer along with her sub-ordinates. After hitting dead end, a victim surfaces and the case took a drift.  ForewordUPDATE: This Fanfic is now available as WHO ARE YOU..? in Webnovel.Read here.Kim Yong-sun as Kim Yeong-haeMoonbyul as Moon HanbyeolWheein as Jung Ji-aHwasa as Ahn Leina  Please support there as well. Thank you ❤️