Im Bona, the youngest daughter of the conglomerate Y Group. She has been in a unrequited love for 14 years without missing out on her appearance, body shape, and financial resources. She has been drinking strawberry milk and taking care of her body every day when she said she would marry her when she became an adult, and she is finally 20 years old! The day has come to put an end to one-sided love. But this guy... You still treat me like a kid 14 years ago... "Are you going to keep treating me like a kid?! If you have a baby with a C-cup, tell him to come out!!" Bona's 19-gold obsession with her first love Eun-ho, a sample of diligence, thrift, and thrift, begins. "Bona, is this what you want to do?"