Oh, oh-ooh-oh Oh, oh-ooh-oh All I know, all I know Loving you is a losing game~   "No matter what happens, I will always love you, I will not give up on us."         "I will fight for us, no matter what, even if it takes my life."

Kim Minjoo an eighteen year old who has cystic fibrosis (CF) and has spent her whole life in the hospital. Her life is full of boundaries, responsibilities and self-control, not until she meets Ahn Yujin, a charming seventeen year old who has the same illness, except she's the opposite of Minjoo. Ahn Yujin a seventeen year old who has cystic fibrosis (CF), all her life her Dad has been trying and bringing her to different hospitals to try and treat her illness, but non

Kim Minjoo hates her life, her parents always say she's "useless", only has a few friends, and nothing good has happened in her life, she always stays inside her apartment, away from people, she only goes out if she needs to buy something or for school. She always sees her life as a depressing and negative one, not until she saw Ahn Yujin, beside her.   What happens then? Will Minjoo see her life differently, or not?