Chapter 1:

Hyewon, a spy, meets a beautiful woman during a mission, only to discover that the mysterious woman was the target she was supposed to shadow for her next mission. In her quest to learn more about her, she befriends her and soon finds herself falling for her despite numerous warnings not to get attached. Upon realising that she is in danger, Hyewon risks everything to protect her, including her job and everything she has ever known.

random highest rankings:
izone #1
wonyoung #5
chaewon #29
eunbi #10
nako #4
hitomi #11
minju #17
yujin #28
chaeyeon #11
yena #10
hyewon #26
kangbi #12