Hana Song is a 16 year old high school student at Hangong High School with her own struggles in life. She lives alone in a small apartment in a sketchy part of town. In school she gets teased and bullied on a constant basis. She sits alone in the back of class with her earbuds in, no friends around to help her even though others see what happen. Outside of school she wears dark clothes and has a careless outlook on life and gave up hope a long time ago. She doesn't care about herself anymore

What happens when the girl who used to be outgoing in the first couple years of high school suddenly becomes the introvert? She tries to be invisible and stays behind the scenes while observing the people around her. No one knows of her depression and anxiety and how it affects her daily life. Her final year of high school, she suddenly meets the 12 most popular guys in school. So what happens next as they become friends and grow closer to each other?