Nanase Sakura is a 23-year-old rookie nurse. She met Doctor Kairi Tendo several years ago and fell in love with him. To meet him again, she studied hard and became a nurse. After 5 years, she finally meets Kairi Tendo again, but he has a totally different personality than what she imagined. Kairi Tendo, who is 31-years-old, is commonly referred to as the "Devil" at work. He is a level-headed perfectionist and often makes biting remarks to doctors and nurses. Nanase Sakura works hard to receive recognition from Kairi Tendo and she also expresses her feelings honestly to him. Due to her persistence, Nanase Sakura becomes well known at the hospital and she picks up the nickname of the "Warrior. Chick" Meanwhile, Kairi Tendo becomes attracted to Nanase Sakura....

Shibata Mikako, 30, has been waiting for employment since her company closed six months ago. She is dating a young man who is going to college, but he just takes her as a cash machine, with no intention of serious love at all. In the worst shape of her life, she almost has nothing to eat. At this time, she meets Kurosawa Ayumi, her boss of former company. She is taken by Kurosawa like a stray cat to a coffee shop that is about to open. Although Kurosawa is tall and handsome, he got a venomous tongue that can kill people. Mikako works there with great caution. But at the same time, she doesn not forget to find another job to get rid of her former boss. During this period, she learned about Kurosawa's little-known past. Her long-awaited love quitely is coming quietly......