It's all about a childhood romance.
Hinamori a girl who's been dreaming of becoming a Nurse someday. And she has been dreaming of meeting his childhood friend again. Her childhood friend was, Prince Kazehaya Jung. Or Edward Jung.
She met Prince Kazehaya Jung after 10 years. Who has changed a lot. And he's known as Edward Jung.
Hinamori has another childhood friend. Kyoya Min Hyuk, he has been her only friend since then. He has been so protective of Hinamori. And he has a secret feelings for Hinamori.
Natsu Young Do- The kid who used to bullied her. When she was a kid. And turned out, that she likes Hinamori. But he couldn't express it. And he ended up, protecting her too.