A hired assassin Myoui Mina is tasked to kill the heiress of the top technology company, Son Chaeyoung. A forgotten promise will bind their fate together. Will she kill her? or fall for her? ___ This will be my longest book on the making. It'll be a slowburn so have a sit and read all you want. Pairings: Michaeng Saida 2yeon Jitzu ____ Highest Ranking: #1 Twice #1 saida #4 jitzu #1 Michaeng #2 2yeon