You're a nurse. You are also pregnant, but that doesn't stop you from being a nurse.

One day, after you were treating a patient, you locked yourself in a room and gave birth alone, but only to one baby yet, the others would come the other days.

The next day you were walking back home from the mall your son is in the stroller. When suddenly, a guy walks towards you, it was the mafia boss. You suddenly remember, he's the person you had a one night stand with, It was Kaito.