In which Lee Hayi is a chief editor in a magazine firm, sick of being love sick, and most likely getting type II diabetes from eating the cookies that have been placed on her desk every day for months without fail. From an anonymous sender. Valentine's day is approaching and she's busy with a tonne of work - reviewing and writing articles all day. She tells herself that she'll just enjoy Black Day in April with a huge bowl of jjajangmyeon. Perks of being single? Or maybe not-