Here is the sequel of "My blood is cold as ice"... I don't know if you will like it as much as the other book, but I'll try my best to write a good story
IN THE PREVIOUS BOOK:
DeungHae is a member of InterLab, a special company that people joins to repay debits by doing missions (or tasks) to complete no matter what. But DeungHae is a particular member: she's there because InterLab saved her when she woke up from coma, in which she was after her parents abandoned her in a wood. She did her first mission at the age of 10, as assistant of Mr. Park. But she wasn't lucky: her partner were crazy, he liked to "play" (read: hurt) people, and especially girls. But she was too weak at the time and he "trained" her. Luckily other members found out and saved her. That's why she can trust only two persons: HyunKi Oppa and her friend HyeRim. And it's with her that she has to do the mission in Korea: disguised as make-up artists they must find out who is stalking NU'EST. With their surprise, they're target is none other than Mr. Park. Blind because of revenge DeungHae makes up a plan without considering the idea of "fun" that her opponent has: in fact her plan ends up hurting NU'EST. And she can't accept it. That's why she and her friend leave Korea secretely: HyeRim has almost repaid her debit so she can go back to Aron in a few time; DeungHae doesn't even know if she will ever be free but anyway she knows she can't love Ren... So she leaves him a letter explaining her reasons